有毒物质

First of all, because they are toxic, they have the capacity to harm not only targetedpests but also humans and wildlife. Approximately 165 pesticidal chemicals classified

首先，由于杀虫剂是有毒物质，它们不但对有害生物产生作用，而且会给人类和其他野生动植物造成危害。

Methods Both laboratory experiment and experiment on site were conducted according to Standardization of Methods for Toxicant Substance Determination.

按照《工作场所空气中有毒物质检测方法研究规范》的要求进行实验室实验及现场实验。

The extension and degree of damage made by toxicant become greater and greater.

酒精又名乙醇，是我们在生产和生活中都经常会接触到的有毒物质。

Tetrahymena is unicell eucaryou, sensitive to toxic substance in environment, ideal indicator that forecast environmental pollution early.

四膜虫是一种真核单细胞原生动物，对环境中有毒物质的毒性反应敏感，是环境污染早期预报的理想指示物种。

Although many toxic materials have low solubility in water, the concentrations that are deemed hazardous are also very low.

虽然许多有毒物质在水中具有较低的溶解度，但产生危害的浓度也很低。

The alchemists who worked in these apothecaries suffered a considerable risk to their health, working so invariably close to poisonous substances.

在药店里工作的炼金术士还要面对极大的健康风险，因为他们的工作地点总是有有毒物质。

The alchemists who worked in these apothecaries suffered a considerable risk to their health, working so invariably close to poisonous substances.

在药店里工作的炼金术士还要面对极大的健康风险，因为他们总是与有毒物质接触。

However, since violent burping will occur big time during the shift, all ash afterwards will carry poisons.

然而，因为在极移的时候地球会发生剧烈的抖动，之后所有的火山灰会携带着有毒物质。

This is because new regulations, due to come into force in 2011, will require crematoriums to filter out toxic substances such as dioxins and mercury from waste gases.

这是因为将在2011年生效的新法规规定火葬场要过虑出废气中像二恶英，水银这样的有毒物质。

The important reason is that the DNA exists and cumulates for a long time. There are many DNA damage restoration system in the cell when the organism is in the long course of evolution in order to keep stability.

大肠黏膜细胞是不稳定细胞，极易受到各种各样有毒物质的刺激造成DNA损伤，若得不到及时修复，突变积累易发生恶性转化。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐