查询词典 boron

Based on these, we will measure isotopic composition of boron in biological fossils, such as shell, foraminifer et al. producing from Ynaghu Village, Yanqing Basin, Beijing at early Quaternary and from the sediment of salt lake in Tibetan at Quaternary, and then offer a reliable boron isotopic evidence for determining their source and survival surroundings.

在此基础上对北京延庆杨户庄第四纪早期地层和青藏高原第四纪盐湖沉积产出的有孔虫、贝壳类等生物化石的硼同位素组成进行测定，为确定它们的海陆相来源及其生存环境提供硼同位素证据。

In one embodiment, the invention is a system for initiating free radical polymerization comprising: a in one part, one or more amido-borate compounds containing one or more anionic amido-borate moieties comprising an organoborate wherein the boron atom is bonded to a nitrogen atom of ammonia or an organic compound containing one or more nitrogen atoms, such as a hydrocarbyl amine, a hydrocarbyl polyamine, or an aromatic heterocycle containing one or more nitrogen atoms and optionally containing one or more heteroatoms or heteroatom containing functional moieties, and one or more cationic counter ions and b in a second part, a liberating compound which reacts with the nitrogen atom bound to the boron atom upon contact with the amido-borate to form an organoborane radical.

在一个实施方案中，本发明是引发自由基聚合的体系，包括：a在一个部分中，一种或多种含有一个或多个包含有机硼酸根的阴离子酰氨基-硼酸盐部分和一个或多个阳离子抗衡离子的酰氨基-硼酸盐化合物，其中的硼原子键合到氨的氮原子或含一个或多个氮原子的有机化合物，例如烃基胺、烃基聚胺或含一个或多个氮原子和任选含一个或多个杂原子或含杂原子的官能部分的芳族杂环的氮原子上，和b在第二部分中，在与酰氨基-硼酸盐接触时与键合到硼原子上的氮原子反应形成有机硼烷基团的释放化合物。

We successfully improved the methods of departing O-methyl using boron tribromide, of isolating hydrogen bromide byα-chloro-ethyl chloroformate, and of related in synthesis of natrexone, new medicine, using boron tribromide. This resulted in generation of hydrogen cyanide becoming impossible.

改进了以氯甲酸-α-氯乙酯脱代替溴化氰以及改进的三溴化硼法作为新药纳曲酮合成中相应的方法，去除了合成过程中产生氰化氢气体的可能性。

This paper introduces the technical property of boron mud composite mortar and the action of boron mud in the composite mortars .

介绍硼泥混合砂浆的技术性能，通过试验，证明了用泥在混合砂浆中的作用

As far as we know, no information of this synthesis method on boron suboxide films has ever been reported. Series measurements were performed to study this kind boron suboxide nanofilms prepared by PLD.

我们在制备方法上作了突破：以PLD方法得到类HP-HT的条件制备得到boron suboxide薄膜并对它进行了一系列的观测鉴定和分析研究。

The chemical bonding of different boron states has been investigated and the formation mechanism of"Boron suboxide"phase is suggested.

对不同氧含量的B〓O膜进行X光电子能谱分析，探讨了离子束辅助沉积B〓O薄膜各不同硼氧比的结合能变化，给出"suboxide"相形成的可能机制。

Now boron suboxide is usually prepared under the condition of HP-HT. We prepared our boron suboxide films by the method of PLD.

制备硼的亚氧化物的薄膜需要hot-pressing技术，现今更是以HP-HT合成方法制备得到。

XPS analyses were carried out for BXO films containing different oxygen contents systematically. Chemical state of boron were investigated in detail and the formation mechanism of "Boron suboxide" phase was achieved.

系统地改变薄膜氧硼比，探讨了离子束辅助沉积BXO薄膜各不同硼氧比的结合能变化，给出"suboxide"相形成的可能机制。

Possessing the characters of high hardness, low density and inert chemical properties, boron suboxide is the best candidate for super-hard films. The synthesis technique of boron suboxide film is hotpressing.

硼的亚氧化物是坚硬薄膜材料的最佳侯选物之一，具有高硬度，低密度，稳定的化学性质及很多有意思的物理性质等特质。

A space or line of the staff.lined with boron or filled with boron trifluoride gas.

有具线纹的硼或充满三氟化硼气体的小室。

Dixie itself is a nickname for the American South.

Dixie 本身是美国南部的别称。

I think John Terry epitomises that and a big reaction is what we will be looking for.

而我认为特里就是这样一个典型，他正是我们期望看到的那个领秀。