alkali GRE专八托福

PTFE fiber has good corrosion resistance, low friction factor, nonflame, strong acid and strong alkali resistance, high temperature and low temperature resistance.

PTFE纤维具有优良蚀性,低摩擦因数,不燃,能强酸、强碱、强氧等强蚀性试或溶,高、低温性能优良。

The inner parts of the drying tower and alkali subsider were reformed with the surf ace-treated regular plastic packing and the results are satisfactory.

采用经表面处理塑料规整填料,对干燥塔和碱沉降器内件进行改造,取得了满意结果。

PA seccotine has strong oil resistance, acid resistance and alkali resistance, with which can protect the printing machine from the erosion of fountain solution.

PA强力粘有较强油，酸碱，可良好保护印刷机滚筒免受润版侵蚀。

Using dolomite and sinter magnesia clinker as a main material and added with alkali metal phosphate binder and additives,amagnesia-calcia coating material has been developed.

采用白云石配以适量镁砂熟料和磷酸盐结合及复合外加研制出了具有较好性能镁钙质中间包涂料。

Which indubitably indicate that the bismuthous sulfide can only dissolve in halogen acid except hydrofluoric acid, the mixed solution of dilute sulfuric acid and alkali halide.

结果表铋只能溶于氢卤酸（除氢氟酸外）、稀酸与碱金属卤物混合液中，不能溶于稀酸中。

A foamable phenolic resin was prepared,through addition,condensation,in the presence of alkali.The resin was foamed with surfactant, foamer,solidifying agent , then the foam phenolplast was given .

苯酚与甲醛在碱性条件下经加成、缩合制得可发性酚醛树脂，该树脂和表面活性、发泡、固一起发泡即得酚醛泡沫塑料。

N-oleoyl alanine was prepared by the reaction of alanine with chlorides under alkali solution.

将油酸酰氯和丙氨酸在碱性溶液中反应制备N-油酰基丙氨酸。

The alkali without natrium synthesizes separate n amizeolite colloid and the alkali with natrium forms the congeries.

无钠碱源形成分立纳米沸石胶体,有钠碱源形成聚集态纳米沸石。

2 Liquor ratio and alkali dosage: The technical parameters of sulphidity are also resulted from the experiment.

2液比、用碱量：度工艺参数也是根据实验得出数据。

According to chemical composition, it can be classified into alkali ultra-thin glass and alkali-free ultra-thin glass, namely sodalime glass and aluminosilicate glass.

按照学成分不同，超薄玻璃可分为含碱超薄玻璃和无碱超薄玻璃。

It has been proved that it is economical and feasible to eliminate educt alkali from coarse sodium tungstate with electrodialysis method of negative ion (1) selective membrane.

一价阴离子选择膜电渗析法从粗钨酸钠溶液中脱除游离碱是经济可行。

Specially, the enterprises will produce shapes of olid alkali to satisfy the different users' request.

特别是将生产各种形状固碱，可满足不同用户要求。

Dongping gold deposit occurs in the internal contact belt between Shuiquangou alkali mixtite and old layers.

东坪金矿床赋存于水泉沟碱性杂岩体与老地层内接触带上。

This review summaries the application of ion exchangers in the separation and determination of alkali metals, alkali-earth metals, noble metals, rare earth elements and actinoid.

离子交换在萃取色谱中得到了广泛应用，本文详细总结了离子交换在分析学中用于碱金属、碱土金属、贵金属、稀土元素、锕系元素等分离与测定。

The hydrochloric acid cocculus tunbergii alkali is its muriate.

盐酸青藤碱是其盐酸盐。

Based on the characteristics of biomass fuel, this article summarizes the sources of alkali metals in biomass and the elutriation and migration.

摘要在确了生物质燃料特点基础上，对生物质中碱金属元素来源和析出迁移规律进行了概述。

Experimental results in rats showed that the efficacy of preventing hyperlipoproteinemia by oral administration of theproduct obtained by concentrated alkali technology ...

结果表浓碱工艺产品口服用于实验性大鼠高脂血症防治,效果较好。

Methods and recent development of isolation of structurally characterizable alkali, alkaline earth and lanthanide metal ketyl radical complexes were reviewed in the paper.

介绍了利用金属离子配位作用捕获并分离重要有机反应中间体——自由基中间体研究方法和最新进展。

ATM is a white crystalline power,easily effloresce in air,Slightly soluble in water,Soluble in ammonia water and alkalies.

四钼酸铵为白色结晶性粉末，在空气中易风，微溶于水，溶于碱和氨水。

Abstract : When two different metals are placed in a fused alkali or alkaline-earth chloride bath, the more readily corrodible metal will deposit on the less corrodible one.

摘要 ： 当两种不同金属放在熔融碱金属或碱土金属氯物盐浴中时,较易蚀金属会沉积在较难蚀金属上。