四分的

This investigation focuses on pigment phthalocynine green G modified with octadcylamine, which is suspended in tetrachloroethylene and 1,2-dibromoethane using span-80 and CH-6 hyperdispersants as emulsifiers.

采用正交设计方法，以十八胺改性酞菁绿G形成电泳颗粒，以四氯乙烯和1，2-二溴乙烷的复配液为分散介质，Span-80和CH-6超分散剂为稳定剂，制备了分散性和稳定性良好的电泳显示液。

The results show that the optimum catalysts for the Michael addition and the nitroreduction were tetrabutylammoniumfioride and titanium trichloride, and the yields of the addition product and the reduction product were 54% and 78%, respectively.

结果表明，Michael加成反应和硝基还原反应的最佳催化剂分别是氟化四丁基铵和三氯化钛，在二者催化作用下所得加成产物和还原产物的收率分别为54%和78%。

As a certain Chelsea TV presenter would say,"Four is still a possibility".

切尔西电视台的主持人会说：四场（12分）的可能性仍然存在。

Firstly, the mesh dependent norms are introduced and the equivalent mixed variational problem of the fourth order obstacle problem is derived by the penalty method.

首先，引入网格依赖范数，通过加罚方法得到了与四阶障碍问题的等价的混合变分形式。

It was found that vegetable compound wax prepared from 16.7% vegetable wax, 18.8%, 58.3%, 4.1% and 2.1% exhibited excellent performance having needle penetration of 68 (1/10) mm, drop melting point of 60℃, kinematic viscosity of 8.13 mm2/s and its oil content was 34.81%. Besides, it was convenient to be used and transported since it was solid at ambient temperature, thus, it was an ideal oil phase material for emulsion explosive.

当植物蜡用量为16.7%、减五线馏分油用量为18.8%、减四线蜡下油用量为58.3%、微晶蜡用量为4.1%、石油树脂用量为2.1%时，制得的植物型乳化炸药专用复合蜡针入度68 （1/10）mm、滴熔点60℃、运动粘度8.13mm2/s、含油量34.81%，其性能优异，常温下呈固态，方便使用和运输，是乳化炸药理想的油相材料。

The thesis is devided into four parts:Part one discusses the fundamentals of government voidance by western scholars, which is the theoretical basis of the paper.

本文共分四部分：第一部分是西方学者关于政府失效有关理论的论述，这是全文的理论基础。

Part one is composed of four chapters. Chapter one is a review of the applications of ytterbium metal in organic synthesis.

第一篇分四章：第一章，关于金属镱，及镱试剂促进的有机反应及其在有机合成中的应用文献总结。

The improved variational-perturbation method based on integral equation (variational-integral perturbation method) is applied to solve the quartic anharmonic oscillator in the ground state.

利用基于积分方程的改进的变分微扰方法求解四次方非谐振子基态。

According to the research of the genetic texture of zircons and SHRIMP dating in the Caledonian banded - augen granitin Yunkai area and the Indosinian charnokite in southeast Guangxi,It is discoved that the ages of later Mesoproterzoic Sibao orogeny event concentrates between 1100 and 950Ma. It provides the important evidenve for the convergent and collision of Rodinan supercontinent in South China and the south extending of Jiangshan-shaoxin collision belt in later Mesoproterzoic.

云开地区加里东期条带-眼球状花岗岩，以及桂东南印支期紫苏花岗岩中锆石的成因结构和离子探针定年研究发现，中元古末四堡造山作用事件年龄集中分布于950-1100Ma，为华南中元古末罗迪尼亚超大陆聚合碰撞造山和江绍带的南延提供了重要证据。

Reciprocating means up and down or banck and forth, It is the up and down action of a piston in the cylinder blick, or engine block.

大多数汽车的发动机是内燃机，往复四冲程汽油机，但是也有使用其它类型的发动机，包括柴油机，转子发动机，二冲程发动机和分程燃烧发动机。

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。