什么一些昆虫和鱼摄入鱼藤酮会致死.Explain why rotenone ingestion is lethal to some insect and fish species.所述植物提取液可以是辣椒素、鱼藤酮.The plant extract liquid may be capsaicim or rotenone.为了优化鱼藤酮异构化制备异鱼藤酮的工艺.采用三氯化铝催化下异构化.To optimize the process o...
只有熟练的工匠才能把板岩劈成石片.Only a skilled workman can splIt'slate into layers.手巧的人能把板岩剖成片.A skilled person can splIt'slate into layers.因部分地层中含有碳质板岩, 对地球物理工作的结果产生了一定的影响.Because some strata carbonaceous shale, the result o...
The apples, pears, quinces, medlars, and some less well - known genre have been classified.其中苹果 、 梨 、?X?K 、 欧楂等属和一些不太著名的属,又被分类.The apples, pears , quinces, medlars, and some less welknown genera have been classified.其中苹果...
He was a man of extraordinary vigour and liberality of mind.他是个生气勃勃和思想非常开朗的人.The most remarkable feature in the whole occasion was the excessive liberality of the archdeacon.这场婚礼中最引人注目的特点,就是会吏长的分外慷慨.It would be great if ...