Why, why? Thank you for the explanation

I can't see anything.

The leap month of the lunar calendar is one leap in 3 years, two in 5 years, and seven in 19 years.

The Chinese lunar calendar divides the 24 solar terms into 12 solar terms and 12 middle terms. The lunar calendar is based on the moon cycle (lunar calendar), and the 12-month calendar has a total of about 354 days. Combined with the almanac (Gregorian calendar), the almanac is based on the cycle of the four seasons formed by the rotation of the earth.

The monthly calendar is shorter than the annual split calendar, with a difference of 11 days, so it is necessary to add 7 more leap months every 19 years to fill the error.

Taking 2006 as an example, the seventh month of the lunar calendar is a month with solar terms and no neutral weather, so the seven states are used to adjust for the error. The dates of the 24 solar terms in the lunar calendar are postponed month by month, so in some lunar months, the mid-air falls at the end of the month, and there is no mid-air in the next month. Generally, every two years or so, there is a month without a mid-term month, which coincides with the year when a leap month is needed.

Therefore, the lunar calendar stipulates that the month without Zhongqi is regarded as a leap month.

Hehe, when you look at a person, you can't just judge what you see. I think she is very strong, very "charismatic", cheerful, not swayed by family factors, other things, living "freely", he can be friends with many people, maybe in the eyes of people who don't like her, he is "contrived" or something, but you must at least recognize her communication skills. She can live comfortably in her own conditions, which is also a sign of her self-confidence.

Usually seems silent. Maybe at that time, because she met someone or something she didn't like at that moment, if she was interested, she wouldn't have reacted like this. If a person does not have a wide range of knowledge, hobbies, and interests, he will never live "freely" in front of so many friends, and he will not be liked by so many friends and teachers.

She will observe words and looks, speak tactfully, in short, she has her outstanding strengths, don't ignore others because of ordinary, contact her, you will also be infected by her.

Simple charisma.

Although she is not good-looking, at least not ugly.

However, when you communicate with her, you will inadvertently discover your own moods, emotions, and even certain attitudes that are infected by her.

When she's happy, you'll be happy, and when she's sad, you'll can't help but coax her Probably like this, temperament is a personality characteristic reflected by a person's physical quality or physical characteristics, and it is one of the original materials for the formation of personality Temperament can be changed There is no good or bad temperament.

In my opinion, from a psychological point of view, her temperament type is multi-blooded, that is, extroverted, lively, active, and sociable; Quick thinking; Easy to accept new things; Emotions and emotions are easy to arise and change and disappear, easy to be exposed, and so on.

So that's why she has a charismatic personality.

She has a good personality, right? is also optimistic, not accounting too much, maybe she is bold and careful, there are a lot of advantages about her that you haven't found, and if you can't find it, it means that she is very low-key. Learn more from her and you'll understand.

It's very simple, think about it, if you lived in a family like this since you were a child, what would you be? How many hardships she has experienced in her growth and how much she has paid must be good in taking care of people If I also hope to have such a person as a friend If you really care about her and care about her, please try to protect her She is very strong But it reveals the fragility of her heart Hehe Come on!

I guess it's a little bit autistic.

Because Z=R+Jx, satisfies such a mathematical relation: that is, the angle A=Arctanx R, so A=90 degrees, according to the knowledge of the arctangent function, R=0 satisfies the requirement.

1. The sum of the inner angles of the three Hu Chan angles is a+b+c= ,2. The formula sin( Hengchen 2- )cos , so sin[(a+b) 2]=sin( 2-c 2)=cos(c 2).

x tends to -1 - means that it tends to -1 from the left side of the interval, and the numerator x is always greater than 0, so the equation is equal to -

Visual errors.

Vision is a physiological word. Light acts on the visual organ, which excites its sensory cells, and its information is processed by the visual nervous system to produce vision. Through vision, people and animals perceive the size, brightness, color, movement and stillness of external objects, and obtain various information that is of great significance to the survival of the body, at least more than 80% of the external information is obtained through vision, and vision is the most important feeling of people and animals.

Error is an experimental science term. Refers to the degree to which the measurement deviates from the true value. It is impossible to obtain an absolutely accurate value from the measurement of any physical quantity, that is, with the most perfect method that can be achieved by measurement technology, the measured value is also different from the true value, and the difference between the measured value and the real value is called error.

Visual error refers to the difference between the information obtained by humans and animals by visually perceiving the size, light, shade, color, and movement of external objects and the real size, light, shade, color, and movement of perceived external objects.

This is actually the difference in the direction of the projection of the white line in the middle.