锌基合金的压铸件总是在氰化镀液中镀铜.Zinc base die castings are always copper plated in cyanide baths.氰化叠氮的灵活多变的化学性质是可控制的.It is possible to harness the versatile chemical properties of cyanogen azide.它们和氰化无物和砒霜一样致命.They're as deadly ...
早期的石印机不小多是手摇式木架布局, 合座靠手工不不安息.Early stone press mostly hand - driven Fiat ship structures , fully manual operation.在山区,差不多所有的材料部是油印或石印的.In the mountains almost everything had to be mimeographed or stone - block lithograph...
白喉鸟a bird with a whitish throat建议家长让孩子接种抗白喉疫苗.Parents are advised to have their children immunized against diphtheria.医生诊断我的病为白喉.The doctor diagnosed my illness as diphtheria....