查询词典 donor impurity

After each time roll changing, must inspect the lubricant whether to harden the nigrescence, whether by impurity pollution, whether to oxidize the emulsification.

每次换辊后要检查润滑脂是否硬化变黑，是否被杂质污染，是否氧化乳化。

The condensation reaction,in which the yield of intermediate product after refining process was more than 90%,used iso-butylaldehyde and formaldehyde as materials,Et 3N as catalyst.The hydrogenation,in which the conversion of hydroxypivaldehyde and selectivity of NPG were respectively 99% and 95%,used Cu-ZnO as catalyst,and ethanol as solute,meanwhile in the hydrogenation,the impurity in material could also ...

缩合反应采用异丁醛和甲醛为原料，三乙胺为催化剂，在 60℃左右反应，缩合产物经减压蒸馏和结晶、干燥，得到收率为 90 %以上的中间体羟基戊醛；加氢反应采用自制的Cu -ZnO催化剂，乙醇为溶剂，在 15 0℃将HPA加氢生成新戊二醇，HPA转化率为 99%，新戊二醇收率在 95 %以上，而且HPA缩合反应的副产物在加氢反应中也转化为新戊二醇。

The on-state resistance is lowered by 24％ because of the higher impurity concentration of the SOI surface.

采用这种方法制得的SOI LDMOS的纵向击穿电压提高了43％，导通电阻降低了24％，这是因为它的表面浓度更高。

In this way,the vertical breakdown voltage of SOI LDMOS with 2μm thickness SOI layer can be improved by 43%.The on-state resistance is lowered by 24% because of the higher impurity concentration of the SOI surface.

采用这种方法制得的SOILDMOS的纵向击穿电压提高了43%，导通电阻降低了24%，这是因为它的表面浓度更高。

The main impurity involved in the synthesis of erythromycin oxime was separated and purified, which was identified as the very compound formed in the acidic hydrolysis of erythromycin A, i.

分离和鉴定了在合成红霉素肟的过程中产生的一种主要杂质，通过 IR，UV，MS，1 H NMR和 1 3C NMR确证它和红霉素在酸性水解时生成的红霉素 A 8，9-脱水- 6，9-半缩酮为同一化合物。

But pancreatin is a mixtrure of various enzymes, each enzyme has a low purity and many enzymes have similar molecule structure and physicochemical properties, when extracting one enzyme, it is easy to abandon the otherone as impurity. This is why there are few technoloies of stimutaneous extraction of more than three enzyme from pancreatin and all the technoloies have shortages.

但是由于胰酶为多种酶的混合物，每种酶的纯度很低，许多酶又具有相似的分子结构和理化性质，因此往往在提取一种酶的同时，其它酶被当作杂质处理掉了，这就导致了胰酶中三种以上酶联产的工艺极为少见，而且已有工艺都有各自的不足。

According to the difference of structure and character between D-calcium pantothenate and its impurity.column ,we choose different column temperature, mobile phase to confirm the best conditions, then to validation to be sure the method applicable.

根据D-泛酸钙和含有的杂质在结构及性质上的差异，分别选用不同的柱温、流动相比例、流速等条件以确定最佳色谱方法。

The reactivities of phosphate rock in China are low and its impurity,especially the Mg is high.

鉴于我国不少磷矿的反应活性偏低和杂质对高浓度磷复肥的生产不利，指出：磷肥工业的发展应结合因矿制肥的原则，对低品质的磷矿应着重提高磷肥产品有效养份和产品质量。

At the same time,conditions of plutonium separation by PMBP and impurity elements have been verified in the experiment.

同时对PMBP分离钚及杂质元素的条件进行了实验研究。

Comrade pointsman, you may try to use some cosmetic to protect your skin, and in diet, the the pectin of Jew's-ear has powerful adsorbability, it could collect the dust and impurity of the body and make them out, these are also be good for your health.

交警同志，为了保护皮肤，你们可以适时用一些防晒霜；在饮食方面，黑木耳的胶质体有极大的吸附力，它能把残留在人体消化、呼吸道系统的灰尘、杂质集中起来，排出体外，这样，也是对你们的身体有好处的。

Putt your way through 36 fun-filled holes of minigolf on 3D designed courses with elevated greens, bunkers, bridges and water hazards, among other crazy obstacles.

您的推杆方式，通过36个有趣的填孔迷你的三维设计的课程，以提升绿党，掩体，桥梁和水的危害，除其他疯狂的障碍。

Some participles can be used either as attributes or as predicatives.

有些分词既可当定语用，也可当表语用。