Test method for compressibility and recovery of asbestos 石棉的可压缩性和恢复试验方法
Bottom hole pressure buildup test 井底压力恢复试验
An experimental study of ecological restoration of mining wasted lands of kaolinite minerals in south china 南方高岭土采矿废弃地生态恢复试验研究
Power electronic capacitors - requirements for disconnecting test on fuses , destruction test , self healing test and endurance test 补偿电容器.第2部分:熔断器切断试验破坏试验自行恢复试验和疲劳试验要求
Power electronic capacitors . part 2 : requirements for disconnecting test on fuses , destruction test , self - healing test and endurance test 功率电容器.第2部分:熔断器的切断试验破坏试验自恢复试验和持久性试验要求
Shunt power capacitors of the self - healing type for a . c . systems having a rated voltage up to and including 1000 v - part 2 : ageing test , self - healing test and destruction test 额定电压在1000v以下含1000v的交流自恢复型旁路电容器.第2部分:老化试验自恢复试验和破坏性试验
In this paper two - generation reproduction toxicity of fenvalerate , a - cypermethrin , chlorpyrifos , and triazophos was tested in a 21d period with water flea , daphnia magna , . the toxicity indicator included longevity , body length , days to first brood , days to first pregnancy , number of youth per female , intrinsic rate of natural increase ( r ) , and number of broods per female . accordingly , the dose - response relations and relations between the chronic responses and enzyme levels were investigated 为了确定水蚤体内生化指标与慢性毒害效应之间的关系,特别是在低浓度暴露状态下生化指标改变的生物学意义,以便能更准确预测早期农药对水蚤种群的潜在危害,本文以浙江省常用杀虫剂氰戊菊酯、高效氯氰菊酯、三唑磷和毒死蜱进行了大型蚤( d . magna )的急性和慢性毒性试验(包括子代水蚤的恢复试验) 。
The phenomenon that ache and bche activity of daphnia magna were higher than controls might result from stimulating actions of pesticides at sub - lethal concetrations . in the recovery test , the body length and reproduction index , such as number of young per female , were reduced for f1 ( 1st ) and f1 ( 3rd ) individuals if the parents ( f0 ) exposed to fenvalerate and a - cypermethrin 子代第一胎f _ 1 ( 1st )和第三胎f _ 1 ( 3rd )水蚤恢复试验中,水蚤的生物学参数及生化指标都有所恢复,但高浓度的农药经母体转移到子代体内,对子代水蚤生长、繁殖和体内胆碱酯酶活性仍然存在一定的影响。