查询词典 impurity

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。

Chapter two investigates the electronic transport properties of a straight quantum wire with a single finite-size attractive impurity partly irradiated by an transversely polarized THZ electromagnetic wave.

第二章用含时模式匹配方法研究了含杂质直量子线在太赫兹电磁波部分辐照下的电子输运性质。

Such local distortions can be viewed asintroducing impurity scattering potential in paramagneticphase,largely increase the resistivity and lower the metal-insulator transitiontemperature Tm.

这样的局域结构畸变在顺磁态可认为是引入不纯散射势，从而大幅地增大了电阻率、降低了金属-绝缘转变温度Tm，并且Tm随σ2的变化关系是线性的。

Because jiao lu is gas medium contain the impurity such as tar, naphthalene, ammonia, sulfide and prussiate, existence is taken pressure mouth and bring pressure pipeline is easy jam, metric not accurate, online sweep the problem such as difficulty.

由于焦炉煤气中含有焦油、萘、氨、硫化物和氰化物等杂质，存在一次取压口和引压管路易堵塞、计量不准确、在线清扫困难等新问题。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐