The chemical contents in the sand quartz has reached national standards of silicon raw material for plate glass production after combined treating by magnetic separation plus diluted acid dipping.
采用磁选分离法+稀酸浸泡法联合处理后，使该地石英砂的化学成分达到了优质的生产平板玻璃用硅质原料的国家标准。
The technology measures of bed rock aciding, preflush and gelling acid fracturing, as well as sand fracturing etc. are used.
采用了基岩酸化、前置液酸压裂、胶凝酸酸压裂和加砂压裂等工艺措施。
The selected caproic acid bacteria could then be used in the maintenance of artificial pit mud and the operation of sand cast technique and pit irrigation technique.
可将选育出的己酸菌用于人工窖泥、窖池泥养护、翻沙材料及灌窖工艺中。
On the basis of analyzing the disadvantages of the acid fracturing and sand fracturing, the idea of proppant-carrying acid fracturing was proposed.
在分析了酸压和加砂压裂不足的基础上，提出了携砂酸压工艺。
Surface viscous acid has been prepared by mixing thickening agent (PAM) and cross? Linking agent (GL-5) with acid, which has the function of retarding reaction rate and sand prevention.
表面稠化酸是将稠化剂(PAM)、交联剂(GL - 5)加到酸中配制而成，它具有缓速酸化和防砂作用。
Used for engraving glass, cleaning residue on the sand casting, controlled fermentation, power semiconductor wafer polishing and cleaning corrosion (with HNO3 mixed acid).
用于雕刻玻璃、清洗铸件上的残砂、控制发酵、电抛光和清洗腐蚀半导体硅片(与HNO3的混酸)。
Through effect analysing and evaluating, the acid and sand fracturings are considered to be better than bed rock aciding.
经过效果分析及评价，认为酸压裂如加砂压裂优于基岩酸化。
The protective effect of calcium pretreatment on the harm of maize seedlings by acid rain was studied through sand cultivation experiment.
通过砂培实验，研究了钙浸种对酸雨伤害玉米幼苗的防护效应。
The mineral oil sandwerecompared with tong oil sand and residue of synthetie fatty acid-bonded sand.
对该种矿物油砂的铸造工艺性能与桐油砂和合脂砂作了比较。
Based on the characteristic of complex lithologic reservoir and the modified experience of the reservoir, sand-propped fracturing technology with novel emulsified acid is put forward.
针对复杂岩性储层的特点和依据该类储层的改造经验，本文提出了新型乳化酸携砂压裂工艺。
The paper studies sand consolidation act of alkaline silicic acid gel and discusses the mechanism of alkaline silicic acid gel used for sand control and contrasts with acidity silicic acid gel.
文中对碱性硅酸凝胶作为固砂剂进行了研究，探讨了碱性硅酸凝胶作固砂剂的机理，并与酸性硅酸凝胶固砂剂对比。
The result showed that the sand - consolidating agent had higher consolidating strength and permeability and very good acid resistance , salt resistance, oil resistance, and heat resistance.
结果表明，研制的固砂剂具有较高的固结强度和渗透性及优异的耐酸、耐盐、耐油和耐温性能。
The small probability for acid accompanied with relative more sand-dust in spring.
沙尘较多的春季产生酸雨的概率小。
Ceramic industry: abrasive materials, alumina, porcelain clay mud, mud and superfine glass powder, refractory material, quartz sand, PVC powder grain tree, citric acid, PE powder, washing powder, etc.
陶瓷行业：研磨料、氧化铝、瓷泥浆、粘土泥浆、玻璃粉、耐火材料、石英砂、PVC树脂粉粒、柠檬酸、聚乙烯粉、洗衣粉等。
The abnormal structure usually appears at the surface layer of nodular iron castings produced by furan-sulfonic acid cured sand mold.
通过实验研究，用甲苯磺酸作催化剂的呋喃树脂自硬砂与稀土镁作催化剂生产的球铁件，通常在其铸件表层出现异常组织。
In this paper, the effect of molding pressure on the strength and hydrochloric acid stability of autoclaved lime_stone sand brick is studied.
研究成型压力对蒸压灰砂砖抗压强度和耐盐酸腐蚀能力的影响。
Sand well the bag is a kind of anti - to pull the strength higher, water the well ventilated is good, and the acid-proof alkali decay with the material that the microorganism erode.
沙井袋是一种抗拉强度较高，透水透气性好，耐酸碱腐蚀和微生物侵蚀的材料。
Sand well the bag is a kind of anti - to pull the strength higher, water the well ventilated is good, and the acid-proof alkali decay with the material that the microorganism erode.
沙井袋是一种抗拉强度较高，透水透气性好，耐酸碱腐蚀和微生物侵蚀的材料。
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