For English translation, if you want to translate the text, you can add 2 80 if the answer is exce

It is known that in the early days ordinary Portland cement (OPC technology) concrete, in the setting, close to the total surface of the area.

The average reduction of cement particles is not filled.

Largely with water. This water-rich area is about.

50 microns thick, similar thickness, interface.

Transition zone (ITZ) in full-fledged OPC mortar and concrete.

Therefore, it is necessary to dissolve the ionic diffuse from the nearby cement.

The sum of the particles to this area, if it is chemically inert.

According to some investigations, the spread of Ofca2+ is identified

Relative Si4+ is responsible for hydrating Portland cement systems.

It is a high concentration of calcium hydroxide.

Observe the ITZ ratio of bulk cement gel.

However, there is growing evidence that the total amount of minerals do chemistry with cement.

hole solution. Tasong and so on. [12] Report, siliceous rocks.

Such as basalt and quartzite and quartz sand, can be absorbed.

Significant'A large amount of hydroxyl and Ca2+ from an artificial cement.

The solution (70 mM hydroxyl, 6 mM Na + 36 mM K, and 4 mM Ca2 + Si4+ are dissolved.

The total amount is initially and begins to precipitate for some time after a period of time. These results suggest that heterogeneous nucleation.

Calcium hydroxide can originate from the sum of surfaces because:

Other investigations have also been reported [10,13] calcium.

Silicate hydrate (rack C-S-H gel) and then form or close to this.

Total posterior of the surface of the calcium hydroxide layer.

Solubility limits are achieved in terms of C-S-H gels. This means:

It is believed that the C-S-H gel is within ITZ and to some extent the majority.

Cement stone as well as can be composed of Si4+

Dissolved by cement and siliceous mass.

It's about Polante cement.

It's a bit long, and it's not easy to write on the phone!

It's so long, I can't see it, it seems to be about studying the consumption psychology of consumers and getting used to opening stores.

You can q me, I prefer English to Chinese.

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It feels a bit difficult, so maybe the translation isn't quite right.

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Dear Joe, I received a letter from you last week and you want to know what the world was like when I was little.

Now let me tell you. Life in the past (compared to the present) was very different.

When we want to get in touch with friends who are far away, we can only write letters. Because we don't have a cell phone, we don't have email.

When we travel to different towns, we all walk, ride horses or take trolleys.

Later, we had buses, and very few people had cars back then. Air travel is a luxury. We often fantasize about traveling by plane, but now everyone can travel by plane, it is very common.

The food was also very different from what it is now. There were no supermarkets at that time, so we all grew our own food. Then we sell them, and the money goes to buy what we don't have.

We didn't have a fridge either, so we kept everything in a special room downstairs so they could stay cold.

The biggest difference, however, is electricity. There was no electricity at all in our town. At night, when we need light, we can only light candles, burn charcoal or wood to keep warm. We also don't have a TV either. In the summer we used to swim in the river.

Life used to be very difficult, but we had a great time.

Love your grandpa.

I wish you progress in your studies and go to the next level!

If you don't understand, please ask in time, satisfied, o( o thank you.)

Please inform us immediately about the specific risks of the goods in question that you would like to insure.

Objection to the problem of the goods shipped by your side.