硅酸

Two exceptions, acetic acid and sodium disilicate, are included in Figure 2.

两个例外，醋酸酸和二硅酸钠，包括在图2。

The experiment indicates: on condition that the mole ratio is 1.1:1, temperature is 90~98℃, pH is 1~2, acid adding speed is 1 drop/(2~3) second, the yield and quality of the products can get increased when reaction liquid disposed with ultrasound wave.

实验表明：在硅酸钠与钨酸钠的物质的量比为1.1：1，控温90~98℃，pH值1~2，加酸速率1滴／(2~3)s的优化条件下，用超声波处理反应液可以增加产品的产量和质量。

Study on continuous production of silica by hypergravity sulfuric acid precipitation method was conducted.

对超重力硫酸沉淀法生产白炭黑进行了连续化实验研究，通过改变硫酸的质量分数、旋转床转子的转速和硅酸钠的流量，探索出了这些工艺条件对白炭黑粉体性能的影响。

L Siliceous soil - Soil composed of acid rock that are crystalline in nature.

l 硅酸土壤-由透明的酸性岩石组成的土壤。

Granite is an acid rock.

花岗岩是一种硅酸岩。

First, the speed of the reaction between mud acid and rock is very fast, the effective distance of acid is short, active acid can not reach deep formation.

首先，高温下常规土酸与地层矿物反应速度极快，酸液有效作用距离短，活性酸不能到达地层深部；其次，HF与铝硅酸盐的化学反应不是简单的一次反应，其副产物氟硅酸和氟铝化物还可与铝硅酸盐发生二次反应和三次反应，形成一系列不溶性的沉淀物，对储层造成严重伤害；第三，高温情况下酸液对井下管柱及工具腐蚀性很强，对缓蚀剂性能要求高。

The super light water repellent hard afwillite type calcium silicate thermal insulation product is successfully made from quart powder and lime as raw materials, alkali-resistant glass fiber, few of paper fiber and additives by means of dynamic water heating synthesis at pilot plant.

利用石英粉、石灰为主要原料，掺加耐碱玻纤及少量纸纤维，添加少量外加剂，采用动态水热合成法，中试生产成功超轻憎水硬硅钙石型硅酸钙绝热制品。

Major: perlite powder, perlite hydrophobic insulation board, perlite filter aid, silicate cotton fiber, ultra-fine aluminum, and other new environmentally friendly products.

主要销售：膨胀珍珠岩粉、珍珠岩憎水保温板、珍珠岩助滤剂、硅酸铝纤维棉、超细硅酸铝等新型环保产品。

A salt of tungstic acid .

氟硅酸钾、氟硅酸钠和氟铝酸盐。。。

Theresult showed that the stability and accuracy of α-Si-Mo heterophony acid absorption photometry methodwere improved higher than that of β-Si-Mo heterophony acid method can be used for daily rapid analysisof high content of silicon in the ceramic chalk.

硅的测定方法很多，对于高硅(Si≥0.4%)样品的测定，一般采用重量法[1]或氟硅酸钾容量法，由于二者都需要把分解好的样品形成正硅酸沉淀进行过滤，然后分别进行测定。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。