查询词典 precursors

The precursors of Mo-Cu composite powders were prepared by chemical co-precipitation using ammonium molybdenum and chalcanthite.

以钼酸铵和五水硫酸铜为原料，用化学共沉淀法制备钼铜复合粉前驱体。

There are other things that we know now that he could not possibly have known—the importance of other greenhouse gases (methane in particular, which wasn't recognised as an important contributor to anthropogenic forcing until 1974, but also chlorofluorocarbons and N2O, which have also increased dramatically because of human influence) and the role of human-emitted particulates and low-level ozone precursors.

还有一些我们现在知道，但普拉斯不可能知道的事情：其它温室气体（特别是甲烷，直到1974年才被认为是人类对气候产生影响的重要因素。其它还有含氯氟烃和N2O，它们也因为人类活动而急剧增加）的重要性和人类排放的微粒及地面附近臭氧前体的作用。

The pancreatic proterses trypsin,chymotrypsin and elastase are all derived from zymogen precursors by proteolytic activation.

胰腺的蛋白水解酶—胰蛋白酶、胰凝乳蛋白酶和弹性蛋白酶都从酶原前体衍生而来，即由蛋白水解而活化的。

It also includes a scaled-down system for deposition of selenium and crystallization of CIGS precursors, suitable for research into process optimization.

它还包括一个按比例缩小系统的硒沉积和结晶体的铜铟镓硒，适合用於研究过程优化。

One or more coating precursors (30) are selected.

选择一种或多种涂层前体(30)。

In order to explore the mechanism of polymerization between lignin from effluent of pulping process and lignin precursors, the method and mechanism of co-polymerization of coniferin with model compound of β-O-4 type lignin were investigated.

为了探讨造纸废水中残余木质素与木质素前驱物之间的聚合反应机理，研究了β-O-4型木质素模型化合物与木质素前驱物松柏醇－β-D-葡萄糖苷－[α-13C]的聚合反应方法及其反应机理。

It is concluded that conjoint analysis among different parameters should be applied in order to distinguish the precursors related to the earthquakes.

综合分析认为，对于与地震相关的电离层异常的识别需要结合多个观测参量的联合分析。

By using nanosized coper catalyst precursors, and preferably nanosized promoters as well, D/T values of greater than 10, and preferably greater than 15, are obtainable with silicon conversions in excess of 80 wt.%.

通过使用纳米级铜催化剂前体，以及优选纳米级促进剂，大于10，和优选大于15的D/T值可在硅转化率超过80wt。％的情况下实现。

The process and crystallography characters of these precursors were studied by means of DSC-TGA and XRD.

利用DSC-TGA和XRD等方法对LZ前驱体的煅烧分解过程、产物物相进行了分析和表征。

After cultured with tumor cytolysis antigen for 2 days, the cells were incubated with auto T cell separated by E-rosette formation. Methyl thiazolyl tetrazolium assay was employed to test inhibition rate of tumor specific cytotoxic T lymphocyte on HO9810 tumor cell line. Results Our results indicated that DC precursors in cord blood can be induced to differentiate and mature in the medium containing IL-4, GM-CSF, and TNF-α.

将获得的DC与用 E-花环分离脐血单个核细胞得到的T淋巴细胞共同培养3 d，然后分为两组，实验组2继续与不同比例的HO9810细胞共同培养3 d后获得细胞毒T淋巴细胞，对照组2除加入HO9810外，还加入了无关细胞，用四甲基偶氮唑蓝法检测其对HO9810细胞的抑制作用。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。