The Apodemus agrarius population quantity graduation standard has been formulated. 制定了黑线姬鼠种群数量分级标准。
( 1 ) The results of acute toxicity experiments in mouses : there were not any poisoned symptom and death of mouse during 14 day-long observation periods. the samples accord to the actual non-toxic level according to the acute toxic dose graduation standard. 经小鼠急性毒性实验:在14天的观察期内未见动物有任何中毒表现,无一动物死亡,按急性毒性剂量分级标准属实际无毒级物质。
Graduation and application of radon daughter standard source 氡子体标准源的刻度和应用
Using risk qualitative graduation method of the American military standard, proposed one kind graduation to the five risk source. 本文运用系统安全的两类危险源理论,阐述了辨识火灾危险源的具体方法,并引用美国军用标准中提供的风险定性分级方法,提出了一种对火灾危险源进行分级的方法。
The graduation project achievement conforms to the present standard requirement, thus is reasonable and feasible. 毕业设计的成果符合现行规范的要求,因而是合理可行的。