Halogen atoms contain seven electrons in their valence shell.卤原子在它们的介电子层含有七个电子.Hydrogen is a one - valence element.氢是一价的元素.Evaluate the evenhanded affirms valence can reflect investment both sides more, justice.评估确认价更能体现...
Air traffic in Poland has been brought to a halt by an air traffic controllers' strike.由于航空调度员罢工，波兰的空中交通已完全瘫痪。Poland provide the opposition for the Scots' last warm-up match at home.苏格兰队在国内最后一场热身赛的对手是波兰队。The de...
Blood is aerated in the lungs.血液在肺中与氧结合.The rooting medium should be moist, well aerated, and sterile.生根的基质应当是湿润, 透气良好和消过毒的.In aerated flow, solids are fluidized or suspended by the gas.在充气流动中, 固体颗粒被气体流化或悬浮起来....
这件衣服不只含有羊毛,还含有大量的人造毛.The garment contains wool and a great deal of artificial wool.用于离型纸上不干胶与海绵 、 人造毛等复合.Is it do from type paper glue , sponge hair , etc. compound to use for....