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College of Environment and Energy Engineering, Beijing Polytechnic University, Beijing 100022, China ）Abstract The phosphoryl N → O migration reaction and ester exchange reaction on phosphorus of phosphoserine with methyl alcohol involving hexa-coordinate phosphorus intermediate 3 had been studied by MNDO method.

用MNDO方法对磷酰化丝氨酸仿生化反应机理中所形成的六配位磷中间体(3)可能的3个异构体的结构及其反应活性进行了研究。

The phosphoryl N→O migration reaction and ester exchange reaction on phosphorus of phosphoserine with methyl alcohol involving hexa-coordinate phosphorus intermediate 3 had been studied by MNDO method. The three isomers structures of 3 were discussed in detail based on the calculation results.

谭波用MNDO方法对磷酰化丝氨酸仿生化反应机理中所形成的六配位磷中间体(3)可能的3个异构体的结构及其反应活性进行了研究。

To compute the convex hull of a planar point set, first to find the extreme points of the planar point set and get the sub collections of points candidate for vertices of the convex hull between them.

新算法达到目前平面点集凸包问题的渐进最好算法的时间复杂度O，其中，n为平面点集的点数，h为平面点集凸包的顶点数。

We bought lots o f pota'to'es l a 'st au'tum n .

去年秋天我们买了很多土豆。

It was found that the section was brittle. The scales of the pangolin were composed of the very thin prismy construction units and the folded units. The scales of the pangolin included such trace elements as S,Si,Fe,Al and Ca, besides the element of C,H,O and N. There were small amount of P element in the internal layer of the pangolin's scale.

结果表明冲击断口为脆性断口；穿山甲鳞片是由极细的棱柱结构单元和叠片结构单元混合形成的；穿山甲鳞片除含有大量的碳、氢、氧及氮元素外，硫、硅、铁、铝、钙5种元素的含量也相对较高，鳞片内层中含有少量的磷元素。

You ca n partially rede em your self with this o ne!!!!!

这题可稍稍解救﹙弥补﹚你！

As insurer and not as reinsurer as in other European countries.

O.I.N.C。作为保险人，而不像欧洲其他国家一样，作为再保险人运作。

If you have record or want to delete primary recording,press the Microphone Mark.You can see a small windows,which clue you the OK for rerecord,the Cancel for not excuting it.

若你已经录过声音或需要删除已经录过的声音，直接点选麦克风图案，接著会出现一个小视窗，告诉你若按O K便可重新录音；按C a n c e l取消，就不会修改上回的录音。

Ribose and deoxyribose (sugar components of RNA and DNA, respectively) have five carbon atoms.

糖是由C，H，O 3种元素元素组成，三者的比例一般为1：2：1，分子通式可以写成(CH2O)n。

I n the High and Far off times, O Best Beloved, there were young scientists who were full of 'satiable curiosities about the molecules of bygone life.

在遥远的过去，有着许多对古代生命分子充满了好奇的年轻科学家。

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％。