四重

The photochemical graft copolymerization of isoprene on the surface of tetrafluoroethylene-propylene copolymer was effected by external magnetic field.

我们已经报道了异戊二烯在四氟乙烯一丙烯共聚物的光化学接枝反应，并且证实了该反应是按三重态机理进行的〔l。

When lactide was purified byethyl acetate for 4 times, it was pure enough to polymerize to be PLA.

以乙酸乙酯作为重结晶溶剂，当重结晶次数达到四次后，其纯度已达到丙交酯聚合的基本要求。

If the Legislative Council passes the original bill again by not less than a two- thirds majority of all the members, the Chief Executive must sign and promulgate it within one month, or act in accordance with the provisions of Article 50 of this Law.

第四十九条香港特别行政区行政长官如认为立法会通过的法案不符合香港特别行政区的整体利益，可在三个月内将法案发回立法会重议，立法会如以不少于全体议员三分之二多数再次通过原案，行政长官必须在一个月内签署公布或按本法第五十条的规定处理。

As the Lenten liturgy frequently repeats, God offers to us sinners the possibility of being forgiven.

正如四旬期礼仪中多次重覆表示的，天主给我们罪人得到宽恕的机会。

Some routing scheduling software requires heavy customization using for example, complicated fourth generation macro language which is difficult to learn.

一些发送预定的软件要求重的定制使用例如，难学会的复杂的第四世代宏语言。

Neither tetrose nor mannan group had metastasis of the liver, and the weights of liver in the two groups were significantly lower than in the control.

四糖组及甘露糖聚组均无肝外转移发生，两组小鼠的肝脏湿重也明显低于对照组。

In chapter 4, a new modal reanalysis method for topological modifications of general finite element system is presented.

本文的第四章提出了有限元系统下拓扑修改的一种模态重分析方法。

Firstly, they had recognized the relationship of the unity of opposites by monarch-subject; Secondly, they had to made a choice between morality and monarchial power, which was to restricted monarchial power by morality; Thirdly,"If non-being turns into being, being becomes non-being", which could set up acoustical resonances in pre-Qin scholars'eyes; Fourthly, the great majority of pre-Qin scholars were firmly convinced heroism which national development depended on morality of monarch-subject.

第一，君臣间是对立还是统一的探讨，主要是针对君臣利害关系问题；第二，君臣在面对道义与权势两难中做出的抉择，君臣是践行君道、臣道的组成部分；第三，无为与有为中所产生的共鸣，主要是侧重君臣在行政管理方面的职权分配思想；第四，主要是如何对君臣角色品分、评价的论辩，是期许典范之治，还是回归理性选择，改变"重人"的传统。

This paper deals with the full study and analysis on the effects of MCPA on monocotyledonous turf and the control effectiveness to the lawn weeds in different dosages. The experiment results shown that: When the dosage is larger than 6000g/hm2, slight phytotoxic effect occurred. The larger dosage, the server the phytotoxic effect.

研究了二甲四氯不同用量对单子叶禾本科草坪草生长发育的影响和对草坪杂草的杀伤效果，结果表明：用量在6000g/hm2以上时，对草坪草就会产生轻度药害，且用量愈大，药害愈重；用量低于1500g/hm2，效果不明显。

Kinesin is plentiful in various kinds of cells, different stages of cell development and multicellular organisms.

它是由两条120KDa的重链和两条70KDa的轻链构成的四聚体。

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。