聚丙烯腈不溶于丙烯腈.Polyacrylonitrile is insoluble in acrylonitrile.方法采用大鼠呼吸道静吸入染毒方法研究丙烯腈对大鼠血液的毒性.Method Rats were made to inhale acrylonitrile in static enclosure cabinet.有机氰化物, 如乙腈 、 丙烯腈 、 正丁腈等.Organic cyanide, like methyl cyan...
Cheap goods are available, but not in sufficient quantities to satisfy demand.有一些廉价的商品，但是数量不足以满足需求。Radon is known to be harmful to humans in large quantities.众所周知，大量的氡会对人体造成伤害。They may have weaponized quantities of anthr...
He had it almost every winter before. The doctor called it laryngitis.以前他几乎每年冬季都要发作, 医生说他患了喉炎.My wife had laryngitis and lost her voice for several days.我妻子患喉炎，噪子哑了好几天了。For many years Harold was afflicted with edematous ...
Now, new models use nice, shiny chrome, hex - head screws.现在, 新的模型使用漂亮的, 有光泽的镀铬六角形镙丝.Forfixing , insulating , shock affixing parts or screws of many items such as appliances, stereos, and eyeglasses.电器、音响响 、 光学学、电脑等的零件 、...