查询词典 lithium

The test indicates:if the time of drying samples is more than 4 h,taking lithium tetraborate as flux,and temperature of melting samples controls at 1 100 ℃,the most stable percentages of gold and platinum can be determined,which are 0.243% and 0.174% respectively.

实验表明：样品干燥时间在4 h以上，然后以四硼酸锂为熔剂，熔样制片温度控制在1 100 ℃时，测得金和铂含量最稳定，其质量分数分别为0.243%和0.174%。

And the healing agent containing both multiply vinyl group and double SiH bonds was prepared by reducing the oligomer by lithium aluminum tetrahydride.,dichloropolymethylvinylsiloxane was prepared by hydrolyzing partially of MeViSiCl2 under nitrogen protected in ether.

甲基乙烯基二氯硅烷在氮气保护下，以乙醚为溶剂进行非充分水解，得到，二氯聚甲基乙烯基硅氧烷，再经过LiAlH4还原可得兼有多个乙烯基和两个SiH键的自修复单体。

The results of surface dose rate determined with lithium fluoride thermoluminescent dosimeter chips in water-organic glass phantom and air had no obvious difference and the surface dose rate and its uniformity,(3.46±0.011) and (0.178±0.15)nGy/h*107Bq were obtained.

用LiF热释光片在水-有机玻璃体模及空气中，分别作125I眼科巩膜敷贴器的表面剂量测定，结果在误差范围内无明显区别，得到的最终表面剂量及其均匀性分别为：(3.46±0.01)、(0.178±0.15)nGy/h*Bq。

A novel macromonomer,polystyrene capped with thienyl group,which can undergos oxidation coupling polymerization,has been synthesized by anionic polymerization of styrene with butyl lithium as the initiator and 3-bromo-thiophene as the terminator.

以丁基锂为引发剂、四氢呋喃为溶剂，在氮气气氛和-78℃下进行苯乙烯阴离子聚合，并加入 3-溴噻吩作为终止剂，从而合成出末端含噻吩基的聚苯乙烯，它可以进行氧化偶联聚合，是一类新的大分子单体。

The invention relates to a method for manufacturing polyesters, in particular, to using a lithium titanyl oxalate as the catalyst for such reaction to provide fast reactions with excellent color properties for the resulting polyester.

本发明涉及一种制备聚酯的方法，尤其涉及采用钛氧基乙二酸锂作为此类反应的催化剂以加快反应，并使所得聚酯具有优良的色泽性能。

The present invention provides an improved method of producing polyester by the polycondensation of polyester forming reactants wherein the improvement comprises utilizing, as the polycondensation catalyst, lithium titanyl oxalate.

本发明提供了一种由制备聚酯用反应物的缩聚反应制备聚酯的改进方法，其中的改进包括使用钛氧基乙二酸锂作为缩聚反应催化剂。

The invention provides a process for recovery of lithium and other metals and salts from brines, by using a series of evaporation tanks to control the evaporation of the brines of this metal, with unnecessity of rigid chemical reaction, so as to product a liquid easily and economically extrcted by metals and salts.

本发明提供一种从含盐天然水中回收金属和盐如锂的方法，通过使用一系列蒸发池以控制含这类金属的盐水的蒸发而无须强烈的化学反应以生产一种金属和盐能更容易和经济地提取出来的流体。

It was described in this paper the effect of vinylene carbonate as additive on rechargeable lithium cell with carbon anode.

本文仅对碳阳极的锂离子二次电池添加剂做探讨。1添加剂的引入及作用锂离子在电解液中和溶剂分子形成溶剂化物，这些分子和锂离子一起插入石墨层，并在石墨层中发生电化学分解引起它的脱落。

Treatment of polystyrene-supported selenium ,bromide with lithium acetylides afforded polystyrene-supported selenoacetylene, which reacted with dicyclohexylborane giving a way for stereoselective synthesis of polymer-supported- vinylic selenides .

聚苯乙烯负载硒溴与炔基锂反应合成聚苯乙烯负载炔基硒醚，再与二环己基硼烷反应制得聚苯乙烯负载顺式烯基硒醚；此负载型烯基硒醚在NiCl2(PPh3)2存在下与格氏试剂发生偶联反应，提供了一种有效的-1，2-二取代乙烯的固相有机合成方法

Effect of three kinds of lithium compounds on ASR expansion of zeolitization perlite-cement mortars was systematically investigated.

McCoy等﹝1﹞首次报道了掺加少量无机、有机化合物抑制ASR膨胀，其中掺加锂盐能有效抑制ASR膨胀，这一结果引起了人们的注意和研究。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。