粘土

Let the molding sand sit for an hour or so because the clay does not immediately absorb the water.

让型砂坐一个小时左右，因为粘土不会立即吸收水分。

So the springback of sand mold has been one of the important factors that affect the quality and accuracy of casting.

所以很有必要对高紧实度造型用湿型粘土砂的回弹机理进行深入地研究。

The company owns the resin sand line with the production capacity of 6000/year.

公司拥有年产6000吨铸件的树脂砂生产线，主要生产各类灰铸铁件和球墨铸铁件，采用树脂砂、粘土砂、覆膜砂等多种工艺来满足市场的不同要求。

There are a lot of factors influencing the mould sand performance,and two of the influences are ambient temperature and used sand temperature in production line.

影响型砂性能的因素很多，其中环境温度和旧砂温度对生产线用粘土型砂性能的影响较大。

The column test results show that the cation exchange adsorption mainly manifests the K(superscript +) and Ca(superscript 2+) exchange in three kinds of typical soil medium, and the cation exchange function compares the sandy gravel column and the fine sand column is more remarkable in the silty clay column.

测试结果分析表明，在3种典型土壤介质中，阳离子交换吸附作用主要体现为K与Ca(上标 2+)之间的交换，且粉质粘土柱中阳离子的离子交换作用较砾石含砂柱和细砂柱更为显著。

The effect of three common hydro-chemical factors,such as univalent cation concentration(Na+ ion concentration),bivalent cation concentration(Ca2+ ion concentration) and pH value on clay particles releasing in sand column was studied through batch test.

通过批量试验，对一价阳离子浓度，二价阳离子等，浓度(Ca2+浓度)和pH值三个最常见水化学因素对砂柱中粘土颗粒释放的影响进行了研究。

The column test results show that the cation exchange adsorption mainly manifests the K+and Ca2+ exchange in three kinds of typical soil medium, and the cation exchange function compares the sandy gravel column and the fine sand column is more remarkable in the silty clay column.

测试结果分析表明，在3种典型土壤介质中，阳离子交换吸附作用主要体现为K+与Ca2+之间的交换，且粉质粘土柱中阳离子的离子交换作用较砾石含砂柱和细砂柱更为显著。

New formula of drilling mud density of the control wellbore closed rate in salt bed .;2. Application of ternary copolymer salt-resisting fluid loss reducer in salt bed of Carboniferous system in Tahe oilfield.;3. The components of amphoteric polymer salt tolerance mud have been introduced, and the field operation technology drilling through thick salt bed by using amphoteric polymer mud system has been summarized.

论述了盐对泥浆胶体性质的影响机理，介绍了两性离子聚合物抗盐泥浆的组成，总结了两性离子聚合物泥浆体系钻穿大段盐层的施工工艺及现场应用中常见的问题，指出抗盐泥浆的基础是保证处理剂对粘土颗粒足够的护胶能力，而手段是提高抗盐处理剂在泥浆中的含量。

Here farmers, engineers, ruddy-faced men, and lace-clad women modeled the landscape like clay, transformed a hostile environment into a colorful scene from a fairytale.

这里的农民和技师，脸膛赤红的男人和身着花边衣裙的妇女就像用粘土塑造风景一样，将恶劣的环境变成人间仙境。

The thick sod walls, heavy thatch roof and small windows of the workshops are deal for retaining the moisture content of these "mountains" of clay.

超氧化物歧化酶的厚墙壁，沉重的茅屋顶，小窗户的研讨会是处理保留水分含量这些&山&的粘土。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。