查询词典 precursor

Results indicated that reaction moved according to de novo synthesis mechanism with the increase of oxidation ability of MFA, while increasing chlorinating ability moved reaction towards precursor formation mechanism.

结果显示，模拟飞灰氧化性的增强使反应向从头合成反应机制的方向移动，氯化性的增强使反应向前驱物反应机制反应方向移动。

Precursor used in this experiment was spun in coagulating bath in different temperature, while the concentration in the bath maintained 60%.

在凝固浴中浓度为60％的情况下，在不同温度下的凝固浴中纺出原丝，用原丝凝固丝条的孔隙率和碘吸附量方法以及密度分析和电镜分析的方法对原丝的微观结构及最终碳纤维的性能影响进行了探讨。

The requirement to fight piracy is one of the oldest bits of international law. The idea that any country may take action against pirates is the precursor to the idea of "universal jurisdiction" used to prosecute heinous crimes such as genocide. In Latin legalese, pirates are termed hostis humani generis (an "enemy of mankind"). Moreover, the UN's Convention on the Law of the Sea stretches the definition to include crewing a pirate ship and inciting or "intentionally facilitating" attacks.

打击海盗的义务本是国际法最古老的成分之一；任何国家都有权采取行动对抗海盗的理念也是&普遍管辖权&的前身（这种权利被用来起诉一些极恶的罪行，如种族灭绝）；在拉丁法律术语中，海盗被称为hostis humani generis，即人类之敌；而且联合国海洋法公约中也界定了包括充当海盗、煽动或&有意协助&海盗袭击等行为。

A preparation method of the visible-light photocatalyst Bi2WO6 nano-powder is characterized by comprising the steps as follows:(1) the selection of raw materials;(2) bismuth nitrate Bi(NO33 question mark 5H2O is added into a citric acid solution to obtain the citric acid solution containing white sediment;(3) EDTA is added into ammonia water which is then added dropwise with the citric acid solution containing the Bi(NO3)3 question mark 5H2O so to obtain a solution of bismuth;(4) the solution of bismuth is added with (NH4)6W7O24 question mark 6H2O solution to form a precursor solution which is then stirred, dried, coked, cooled and ground to obtain decarburized powder;(5) the decarburized powder is roasted for 2h to 4h under 450 DEG C to 550 DEG C to obtain the visible-light photocatalyst Bi2WO6 nano-powder.

可见光催化剂Bi 2 WO 6 纳米粉体的制备方法，其特征在于它包括如下步骤：1原料的选取；2将Bi(NO 3 ) 3 5H 2 O加到柠檬酸溶液中，得到含有白色沉淀的柠檬酸溶液；3将乙二胺四乙酸加到氨水中，并缓慢滴加入含有Bi(NO 3 ) 3 5H 2 O的柠檬酸溶液中，得铋的溶液；4将(NH 4 ) 6 W 7 O 24 6H 2 O溶液加入上述铋的溶液中，组成前驱液；搅拌，干燥，焦化，冷却后，研磨，得去碳的粉体；5将去碳的粉体在450～550℃下焙烧2～4h后，得到可见光催化剂Bi 2 WO 6 纳米粉体。

Heterogeneous Salen-Mn catalyst was prepared by chemical linkage and sol-gel entrapping method. The catalyst and its precursor were characterized by means of FT-IR, UV-vis and 1H NMR.

采用化学键联和溶胶－凝胶相结合的方法制备锚链固定的多相化Salen-Mn催化剂，利用FT-IR，UV-vis，1H NMR等方法对催化剂及其前体进行表征。

In the New Testament he foretells to Zachary the birth of the Precursor, and to Mary that of the Saviour.

在新约，他以451预示诞生的前兆，并玛丽的救世主。

The history of the multilateral trading system is littered with rows, hiatuses, disillusion, despair—and sudden success. In the 1970s many people wrote off the precursor to the World Trade Organisation.

多边贸易的历史充满了争吵、缺漏、幻象、绝望——甚至还有突然到来的成功。20世纪70年代许多人为世界贸易组织写下了序篇。

EBER-positive abnormal epithelial cells and/or infiltrating lymphocytes were found in 14 of 15 cases of precursor lesion.

在15例的期病变中。14例可检测到EBER阳性的异常上皮细胞和／或浸润性淋巴细胞。

In this paper, the method of growing carbon nanotubes bycatalytic decomposition of 〓 in low temperature on apowder Ni-Mg-O catalyst system is used. By controlling thereaction conditions and catalyst precursor, we preparedifferent configuration of carbon nanotubes and discuss themechanism of carbon nanotubes growth, we firstly researchthe character of lithium ion intercalating carbon nantubes,and reach some important conclusions.

本文主要采用了甲烷在镍基催化剂上的低温裂解，控制不同的条件和催化剂前驱体，制备出各种不同形态参数的碳纳米管，讨论了碳纳米管的生长机理；并且首次研究了各种不同形态参数的碳纳米管的嵌锂性能，取得了一些有意义的结论：一。

The formation of the precursor for nucleation and growth of TiO〓 particles is slow from the complex. So the formation of TiO〓 particles is a diffusion-controlled process described as the Lamer model.

虽然水解料液中钛的浓度较高，但是以络合物的形式存在，络合物转变成成核前驱体的反应是缓慢的，使成核和生长过程在扩散控制下按Lamer模型的方式完成。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。