Lead toxic to multiple organ systems animal carcinogen.过去的研究表明,铅可引起多系统、多器官的损伤.Cankered material can produce effluvial carcinogen aldehyde . 2.腐烂的物质可以产生恶臭的致癌物质乙醛.Chemical carcinogens generally require metabolic conversion...
她通过描摹旧故事书上的图画学会了画画。She learned to draw by tracing pictures out of old storybooks.小时候她通过描摹母亲旧童话书里的插图学会了画画。As a child she learned to draw by tracing pictures out of her mother's old storybooks.如果戈德伍德先生果真象斯塔克波尔小组描摹的那样,...
This paper discusses the general principle of bilinear system predictive control.本文论述了双线性系统预测控制的一般原理、方法.Mechanistic models are considerably more robust as predictive tools than are purely empirical models.机械模型作为预测工具,比纯粹的...