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On the other hand, replacing chlordane and mirex by insect growth regulator can eliminate the occupational and social exposure of chlordane and mirex and avoid the potential threaten to human growth.

另一方面，用昆虫生长调节剂取代氯丹和灭蚁灵，可以消除氯丹和灭蚁灵的职业暴露与社会性暴露，同时消除对人体健康产生的潜在威胁。

The GEMC technique has been used to study the VLE of hydrofluorocarbons and hydrochlorofluorocarbons , which are considered as good candidates for replacing chlorofluorocarbons .

利用Gibbs系综方法模拟氯氟烃替代物质汽液平衡方面的研究工作，提出了两种方法来描述这类物质的分子相互作用。

And the wall adhesion problem in the two rotary drum granulators are solved through replacing their lining by chloroprene rubber.

介绍巴陵分公司100 kt/a复混肥装置2台转鼓造粒机，内衬改为氯丁橡胶后，如何解决了粘壁问题。

Objective: To test the conceptive and anti-HIV-1 activity of a new cholate derivative, deoxycholytyosine by replacing the side chain of sodium deoxycholate with tyrosine.

目的：检测自制的避孕型杀微生物剂的候选化合物脱氧胆酰酪氨酸(deoxycholyltyosine， DCT)体外杀精和抗HIV活性。

This paper used a method of curvature circle replacing general curve,the authors obtain twouniversal formulas calculating the inherent frequency of relative oscillation in miniamplitude be-tween columns that have general section curve.

本文应用曲率圆弧近似一般曲线的方法，导出了具复杂截面曲线的等截面柱体在另一柱体上微幅摆动时固有频率的一般计算式。

In this paper we derive the. curve equation of tooth profile on the basis of its meshing principle and discuss the necessity and possibility of replacing the equidistant curve which in the circular section of lang arc external pendulum curve by circular arc.

本文从其啮合原理出发，导出齿廊曲线方程，论述了以圆弧替代长幅外摆线环形部分等距曲线的必要性和可能性，提出圆弧齿形替代要求，运用最优化方法，给出最优设计方案。

The technological process of the new and the old die forging for claw hammer , the action principle of the movable die and its die structure,and the advantages replacing common die forging with the flashless precision die forging have been described.

叙述了羊角锤新旧模锻工艺过程，介绍了活动模具的动作原理及模具结构，阐述了用闭式精密模锻工艺代替普通模锻的优点，提出了模具设计的基本要求，指出了目前使用活动模具闭式精密模锻中所存在的问

While after the clogging has happened, there is no a good way except replacing the substrate.

而在湿地发生淤堵后除了采取更换填料的方法外，还没有较好的治理办法。

The optical fiber transmission techniques have been applied to a wired television transmission network, and replacing the long—distance cable backbone, and application of the co-axial cable advantages as of the transmission medium has formed a concept of Hybrid Fiber Coaxof the branch and going to-some place by distribution.

光传输技术在有线电视传输网网络的应用，取代了长距离的电缆干线，而利用同轴电缆的优点作为支线及分配入户的传输媒质形成了HFC的概念，即光纤电缆混合网。

In many countries, more and more companies are replacing people with co

在许多国家有越来越多的公司使用电子计算机来代替人。

"Second Life is remarkably easy to work with, and is very popular,"

"第二次生命是显着容易的工作，并且很受欢迎，"

For example, we usually assume that materials are homogeneous and isotropic and free of internal defects or flaws.

为了得到适合有限元分析的模型，我们必须经过如图2所示的简化步骤。