查询词典 solvent

Chemical resisting:be able to endure oil,variety of solvent,organic acid,alkalescency,alcohol fructose,antiseptic and other chemical elements.

耐化学性：可耐油、多数普通溶剂、有机酸、弱碱、酒精、果酸、防腐剂等化学物质。

Their cation binding behavior to alkali and heavy metal ions was evaluated by solvent extraction of aqueous metal picrates.

进而采用溶剂萃取的方法研究了它们与一价金属阳离子的键合行为。

The solvent capacity of ionic liquid for alkane is important to he separation of the alkylate and the catalyst.

而饱和烷烃在离子液体中的溶解能力对烷基化产物和催化剂的分离十分重要。

With the using of the low molecular alkane solvent, the pressure requried for the system is decreased largely.

重点论述了超临界流体技术在食品工业和医药工业中的应用，指出了其在今后的可能发展方向。

A colorless flammable liquid alkane derived from petroleum and used as a solvent .

一种无色、易燃烧的液体，从石油中提取，用作溶剂。

Determination of total content of rare earth in rare earth drier and content of hydroxyl in solvent- free alkyd resin are introduced and then compared with the traditional methods.

介绍了稀土催干剂中总稀土含量和无溶剂醇酸树脂中羟基含量的测定，并和传统方法作了比较。

The effects of above-mentionedconditions on alkylene reaction are studied to obtain the optimum reactive conditionsby orthogonal experiments having seven factors and three levels. GCLE is chosen as material to prepare 7-phenyl acetamideyl vinyl cephalkyl acidp-methoxy benyl eatsr in the experiment. The process is as follow: GCLE reacts withiodide in solvent, and produce 3-iodid, then reacts with PPh_3 to produce Witting agent,and reacts with HCHO to produce 7-phenyl acetamideyl vinyl cephalkyl acid p-methoxy benyl eatsr in alkaline conditions.

试验选用GCLE作为原料制备7-苯乙酰氨基-3-乙烯基头孢烷酸对甲氧苄酯，反应过程如下：GCLE与碘化物、PPh3在溶剂中反应生成3位膦盐，在碱性条件下生成Wittig试剂再与HCHO反应生成7-苯乙酰氨基-3-乙烯基头孢烷酸对甲氧苄酯。

Low concentration of allyl alcohol helped to increase the reaction rate and high concentration of H2O2 could decrease the selectivity to glycidol using water as a solvent.

当催化剂用量一定时，以水为溶剂，较低的烯丙醇浓度更有利于反应的进行，而较高的双氧水浓度则会降低产物的选择性。

ObjectiveTo study the anticancer effects of different solvent extracts from Alocasia macrorrhiza in vitro.

目的研究海芋不同溶剂提取物的抗肿瘤作用。

MethodsMTT method was used to detect the survival of tumor cells treated with diffenent solvent extract from Alocasia macrorrhiza in vitro, tumor cell A549, B16, BGC-823, NG108-15 was used as target cell.

方法体外抗肿瘤活性研究采用MTT比色法，靶细胞采用人肺癌细胞株A549、黑色素瘤细胞株B16、人胃腺癌细胞株BGC-823、神经肿瘤细胞株NG108-15。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。