What is precision testing? What does the profession of mechanical precision inspection do?

The sprite test is a computer test, that is, the Turing test, which is a test for the integrity of the computer's performance, and it is a test with a complete system.

Lack of precision. That is, very accurate, very high. The accuracy is also very high.

And most of the high-tech areas in our country. They don't care about production. Space flight.

Plane. Satellite. Wait a minute.

They have to be tested many times with precision. before it can be used.

Precision Testing is a computerized test-aided analysis system.

Precision Testing is a computerized test-aided analysis system.

Basic Definition of Precision Testing:It is a new testing technology originally developed by the Chinese team - Nebula Testing, which completes the design of the test concept and the development of commercial products. It is an innovative test methodology designed to automatically establish a traceability mechanism between the function points and the source of the software system during the execution of black-box test cases, obtain the coverage rate related to function points, and carry out in-depth auxiliary analysis of test cases such as accurate regression.

Functional Technologies:The precision testing system focuses on system-level testing, and the key core technologies are: two-way traceability of test cases and logic, test oscilloscope, coverage visualization, automatic selection of regression test cases, timing analysis of defect final execution, intelligent defect location, aggregation of multi-version white-box test data in agile environment, cluster analysis, test vulnerability detection combining advanced structure and dynamic data, etc.

Precision testing breaks the data silos between software development, testing, maintenance and management personnel, realizes a highly accurate visualization of the software testing process and results, and provides strong data support in terms of high reliability and credibility of software. Precision testing can simultaneously complete data collection and analysis calculations during black-box functional testing, so that teams that adopt the most basic "point testing" can easily cut into the precision testing mode.

Applications:The core data model of the correlation between the use cases based on the accurate test is applicable to any form of software system, so the accurate test can be applied to the testing of various software including embedded systems, distributed systems, web application systems, stand-alone software systems, etc., and is completely not limited to the business needs of the tested software itself.

If an enterprise's products have passed the product certification of the national famous certification body, it can obtain the "certification certificate" issued by the national certification body, and it is allowed to affix the certification mark on the certified products.

This internationally recognized and effective certification method can enable enterprises or organizations to establish a good reputation and brand image through product certification, and at the same time allow customers and consumers to identify the best or worse and safe goods through certification marks.

Simply put, it is to give an authoritative endorsement to help customers identify the ingredients or quality of the product.

Product certification: The activity of a third party who can be trusted to verify that a product or service conforms to a specific standard or other technical specification. Product certification is divided into two types: compulsory certification and voluntary certification.

The International Organization for Standardization (ISO) defines product certification as "a procedure in which a third party confirms whether the company's products, processes or services meet specific requirements and whether it has the ability to continuously and stably produce products that meet the requirements of the standard through inspection and evaluation of the enterprise's quality management system and sample type test, and gives written proof." ”

Most countries and regions in the world have set up their own product certification bodies, using different certification marks to indicate the degree of compliance of certified products with relevant standards.

Such as UL Underwriters Laboratory Safety Test and Appraisal Certification, CE EU Safety Certification, VDE German Institute of Electrical Engineers Certification, China CCC Compulsory Product Certification and CCTP (referred to as Bud) mark, etc.

The product must be tested and certified for entry or export. What is mandatory is the certification that must be done, such as China's CCC certification and the EU's CE certification. Non-mandatory certification means that the country has requirements, but you can choose to do it or not.

According to customer requirements. It's like compulsory traffic insurance and commercial insurance for automobiles. It depends on your customers or your application needs.

Ovulation is the meaning of egg release, there are a series of processes not to say one by one, ovulation test strip radish test strip can more accurately measure their ovulation period, much more accurate than the previous test strip, so more and more people are using it.

Hello: The time accuracy of mechanical watches is in accordance with the national industry "QB T 1249-2004" standard: the allowable error of mechanical watches within 24 hours:

Honorable -10 25 seconds, First Class -20 50 seconds, Qualified -40 75 seconds (excluding cumulative error). According to Citizen's standards, it is normal for a mechanical watch to have an error of -20 to 40 seconds per day.

For example, the face detection technology in Yunmai face recognition uses three-dimensional orientation to make accurate judgment of the three-dimensional orientation of the face, as well as the "pixel-level" positioning of the face feature points, and easily judge the opening and closing state of the eyes.

Face key point detection can pinpoint the location of key areas of the face, including eyebrows, eyes, nose, mouth, facial contours, etc. Supports a certain degree of occlusion and multi-angle faces. Using key point detection technology, you can accurately locate the face beautification part and realize expression interaction.

Anterior pelvic tilt is more of a heart disease for us, a modern fear of ugliness, and as the torrent of life rushes forward, people always want to attribute what they can't control to that they don't want to control.

It has become an excuse, an excuse to be out of shape, and many egos strongly advocate the idea that you're not fat, just a little anterior pelvic tilt.

But is that really the case? The assessment and measurement of anterior pelvic tilt is very unfriendly to a novice who knows nothing about basic anatomy, most people actually have no concept of the evaluation and criteria of anterior pelvic tilt, can you know if the anterior pelvic tilt is measured with your fist against the wall? It can only be said that the distortion is very loose.

The pelvis is like a bowl in the core of the body, the ilium, ischium, and pubis make up our hip bones, and together the hip bones and sacrum make up our pelvis, and in the ** of our body, when the bowl is tilted forward, it forms what we call pelvic anterior tilt.

In the irregular shape of the pelvis, in which the anterior superior iliac spine anterior pelvis and the posterior superior iliac spine posterior to the pelvis, the angle between them and the horizontal line of the pelvis is the pelvic angle.

When the posterior superior iliac spine is higher than the anterior superior iliac spine, the pelvic position is: anterior pelvic tilt, and the angle they form is our anterior pelvic tilt angle.

Anterior pelvic tilt is not a big deal in normal people, 95% of people will have anterior pelvic tilt, and most people do not have a protruding lower abdomen caused by anterior pelvic tilt, so don't use this as an excuse for you to be fat.

The ideal pelvic arrangement should be that the anterior superior iliac spine and the posterior superior iliac spine are in a vertical plane, but an inclination of the pelvis of 5° 15° is completely normal, and the criterion for anterior pelvic tilt comes from the evaluation of orthopedic physics**. In most cases, it is used to assess the condition of the pelvis in individual cases and to help the lumbar spine, and no teacher will allow the patient to perform the anterior pelvic tilt test with his fist against the wall.

You can check the angle of your anterior pelvic tilt by checking the anterior superior iliac spine and the posterior superior iliac spine to detect whether your pelvis is tilted anteriorly, which is normal for most people.

Do you have a anterior pelvic tilt? A self-test method for anterior pelvic tilt!

Go to the hospital for x-ray testing. Because we usually measure by standing straight against the wall, we use the fist between the waist and the wall to drive the force, but because the fist has a size and various cognitive errors, there will be a gap, so the hospital is the most accurate detection.

Accurately test whether you are pelvic anterior tilt, you can detect it through this accurate testing instrument, you can detect it by standing on it, and then the results can come out, the instrument is particularly convenient, and the detection is also very accurate.

Anterior pelvic tilt has now become an excuse for getting out of shape, and now a way to detect it is to introduce a way to detect the head, chest, and buttocks with the head, chest, and buttocks against the wall, heels six feet off the ground, and hands behind the waist. Look at how much space there is, if you can put your fist in it and there is still room, then it's a matter of anterior pelvic tilt. But is the distortion of the body really the anterior pelvic tilt to blame?

If you need to accurately determine the pH value of the solution, you can only use a pH meter, and whether it is fast or not depends on the ionic strength in the solution, the glass electrode and the efficiency of the entire pH meter.

But if the requirements are not high, the fastest is to use pH test strips.

Read with a pH test paper as an integer from one to twelve.

I use a pH meter to be exact.