Assuming the origin and the evolution of the genetic code obeying the rules of the minimization of mutational deterioration,considering the deterioration of amino acid substitution which is derived from the codon mutation,we define the mutation deterioration function of genetic code in a molecular sequence.
定义了分子序列（碱基序列和对应的氨基酸序列）的突变危险性函数；通过危险性函数的极小化可以导出遗传密码的简并规则，终止密码子在密码表上的位置及亲－疏水畴排布，氨基酸在密码表上的定位接近标准密码表。
According to the conception and formulation of minimal mutational deterioration,we deduce the minimization of the global mutational deterioration(GMD) of all nonstandard Mitochondrial genetic codes.
根据突变危险性极小化的方法,导出各物种线粒体非标准遗传密码表的总体突变危险性极小表,证明了各非标准遗传密码表是在一些约束条件下的总体突变危险性极小表,体现了分子进化遵循稳定性原理,并受冻结偶然性制约。
Following the concept and formulation of minimal mutational deterioration,the minimization of the global mutational deterioration(GMD) of all cell nuclear nonstandard genetic codes is deduced.
根据突变危险性极小化法,导出现有相关物种的细胞核非标准遗传密码表的总体突变危险性极小表,证明了各非标准遗传密码表是在一些约束条件下的总体突变危险性极小表,这体现了分子进化遵循稳定性原理,并受冻结偶然性制约。
The worker was exposed to several dangerous chemicals.
这位工作者接触许多危险的化学药品。
Dangerous chemicals should be put out of children's reach.
危险的化学药品应放置在小孩无法触及之处。
If you play with dangerous chemicals like that you are just asking for trouble.
如果你像这样玩危险的化学药品，你就是自找麻烦。
Thus, for example, if inhalation of a chemical is dangerous, there is a presumption that ingestion of the chemical would also be dangerous.
因此，如果吸入一种化学药品是有危险的，就可以判断，食入这种化学药品也是有危险的。
Installations such as explosives depots and chemical stores, and dangerous goods transport routes may pose a risk to nearby residents.
危险设施(例如炸药及化学品仓库)和危险品的运输路线，可能对附近居民构成危险。
Environmental Coefficient in Green Chemistry and Hazardous Chemicals;
绿色化学中的环境因子与危险化学品
hazardous chemical data manual
危险化学品数据手册
protective clothing for hazardous chemical operation
危险化学品作业防护服
carriage of dangerous chemical in bulk
散装危险化学品运输
Research on the Safety Evaluation Index System of Dangerous Chemicals;
危险化学品安全评价指标体系的研究
Risk Management of the Dangerous Chemicals Logistics System Based on GIS Technology;
基于GIS技术的危险化学品物流系统的风险管理
Study on the Multi-Agent Based Model of Dangerous Chemicals Risk Assessment;
基于多Agent的危险化学品风险评价模型研究
How to Study the Public Risk Control System of Dangerous Chemicals Logistics;
危险化学品物流的公共风险管理体系研究方法
A Simple and Feasible Grading Method for Major Dangerous Chemical Hazard Installations
一种简单可行的危险化学品重大危险源分级方法
Even foods that are eaten freshly, we now know, can contain chemicals in trace amounts that could, in large amounts, be dangerous.
我们现在知道，连我们吃的新鲜食品也含有微量的化学药剂，含量一大，就可能有危险。
Secretariat of the Convention on the Prior Informed Consent Procedure for Certain
关于在国际贸易中对某些危险化学品和农药采用事先知情同意程序的公约秘书处
Convention on the Prior Informed Consent Procedure for Certain Hazardous Chemicals and Pesticides in International Trade，Rotterdam，1998
国际贸易中对某些危险化学品和农药采用事先知情同意程序的鹿特丹公约(1989年9月11日)
Experience Exchange for Safety Standardization Promotion in Chemical Enterprises
危险化学品企业推行安全标准化的经验探讨