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...
The transmission of normal circular - arc gear is a typical Bertrand conjugation.考虑到平行轴的法向圆弧齿轮传动已臻成熟,论文重点研究了相交轴与交错轴条件下法向圆弧齿轮传动的基本方案.a verb with an irregular conjugation不规则动词Aromatic cytokinins metabolism is classified un...
那屋子里一片漆黑,沉寂得像座坟墓.The house was dark and silent as the grave.机场像座鬼城, 候机大楼空空荡荡,寂静得可怕.The airport was like a ghost town, the terminal was empty and eerily silent.这颗松树长得像座宝塔,真有意思.It's very interesting to see the pine tr...
每一站都喧闹地播放着十几岁少年所喜爱的劲爆迪斯科音乐。Teenage disco music pumped out at every station.一群小孩冲进来,喧闹地彼此追逐.A troop of children rushed in and chased each other noisily....