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The ability of the chiral bis-imidazolium salt for asymmetric catalytic benzoin condensation has been probed. It has shown good catalytic activity for benzoin condensation, but no enantioselectivity has been detected.

探讨了手性双咪唑鎓盐不对称催化苯偶姻缩合反应的性能，结果表明其对苯偶姻缩合反应具有高的催化活性，但未能显示对映选择性。

In this thesis, a series of benzamides and thioureas derivatives have been designed and prepared. By reasonable photoreaction conditions, a series of benzophenone and quinazoline compounds have been synthesized and structurally determined by NMR, MS and X-ray crystallography, respectively.

本文设计并合成了一系列苯甲酰胺和硫脲衍生物，通过选择合理的光反应条件，合成了一系列二苯甲酮和喹唑啉类化合物，应用核磁、质谱以及X-射线衍射技术对这些化合物的结构进行表征。

Such as van den Bergh, shares 600,331, limiting the sale of shares it shares the reduction in violations after the exchanges have been limited to 30 days are not permitted to sell transactions; and a good 10,000 10,000 (600,576,(closing price of 4.04 yuan) limiting the sale of Shareholders also because in a month to sell limited sale of shares to reach 1.03 percent, have been asked to buy back part of over-selling.

作为布宏达股份（600331，限制了它的股票出售股份的事件减少的交流后，被限制在30天内不允许这样的销售交易，以及良好的10，000 10，000（六十零万〇五百七十六，（4.04收盘价元）限制出售的股东也因为在一个月内出售股份的出售限制，达到百分之1.03，被要求回购的过度销售。

By wen yau in collaboration with Shu Ning Presentation Unit and Ken Cheung, inspired by Bertolt Brecht's "The Seven Deadly Sins". Starting from May 2004, 6 live events and installations have been taken place in different unconventional venues in the building of Hong Kong Arts Centre such as main entrance, atrium, closet under the staircase, etc. Parts of the serial work have been presented in live art festival in Beijing and Taipei.

由 2004 年 5 月起。魂游与许树宁及经纶合作，以德国当代剧场家布莱希特剧作《七宗罪》为蓝本，在艺术中心的不同空间堙A十三个月内以六次的不同形式的演出和装置，不断进行探索、实验，与观众互动间寻找更开阔的演出可能性；系列作品并曾应邀往北京及台北的艺术节作演出。

For example, H, atomic weight of 100,794 hydrogen, carbon FC atomic weight of 1201, the atomic weight of oxygen O for 1594, Copper Cu for F63546 and so on. F history, had also used the other two kinds of "benchmarks", and there have been two kinds of scales used in parallel .1803 years, J Dalton published the first atomic table, the hydrogen-quality of the original F son as a "benchmark "requiring H, atomic weight is 1. In 1826, JJ Berzelius Tony F are presented to the quality of 116 oxygen atoms O as a" baseline "(scheduled for O, E atomic weight 16), which is has been in use to 1961 "Oxygen unit." 1929, found that the oxygen in nature, in addition to the greatest abundance of 16O, there are a small amount of slightly heavier 17O and 18O two kinds of isotopes, and the different sources of oxygen, its composition is slightly different.

例如氢H的原子量为100794，碳FC的原子量为1201，氧O的原子量为1594，铜Cu为F63546等。F历史上，还曾用过另外两种"基准"，并且有过两种标度并行使用。1803年，J道尔顿发表的第一张原子量表，把氢原F子的质量作为"基准"，规定H的原子量为1.1826年，JJ贝F采利乌斯提出，以氧原子O质量的116作为"基准"（定O的E原子量为16），这就是一直沿用到1961年的"氧单位"。1929年发现，自然界中的氧，除丰度最大的16O以外，还有少量稍重的17O和18O两种同位素，并且不同来源的氧，其组成也稍有不同。

After a period of time has been beset by years of many symptoms I had not been repeated.

一段时间之后，困扰了我多年的很多病症居然就没再犯过。

A preliminary bestiary for all the outdoors areas has been written.Many creatures will be familiar, but some have not featured in Might and Magic before, even some that have been present in Heroes of Might and Magic.

户外的怪物设定集已经基本完成，这里会有很多我们熟悉的怪物，也有一些在以前的魔法门系列中没有出现过的，还有一些甚至在英雄无敌中你也找不到她的身影。

As I regretfully fired my babysitter, I realized that her obsessive talk about addiction had always been a "you spot it, you got it" behavior, and it should have been a signal to me that Beulah herself was a drug-stealing addict.

当我遗憾地解雇了我的保姆时发现她对"上瘾"不停的叨念从头到尾都算是一种"发现即拥有"的行为。

For what has been repressed has not been lost; what is now ignored is not beyond recovery.

因为那被压抑的尚未失去﹔那被忽视的仍有可能恢复。

When a bill has been duly presented for acceptance or payment and the acceptance or payment has been refused, the bill is said to be dishonoured.

持票人向付款人提示汇票要求承兑或付款时，付款人拒绝承兑或拒绝付款，均称拒付。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。