当压强趋近于零时, 分子的碰撞就停止了.For the pressure to become zero , molecular bombardment must cease.低的基本压强也是保持表面清洁所要求的.Low base pressure is also a requirement to keep the surface clean.压强的不相等导致气体运动.Pressure inequalities generate gas ...
Shan Dong province hospital devises Hando - Video Assisted thoracic esophagectomy in 2002.02年山东省立医院发明了手辅助电视胸腔镜食管癌切除术.He assisted me with good counsel and encouragement.他以良好的忠告和鼓励帮助我Under any circumstances, air - assisted...
Moonlight was frosting the dew, and an old sundial threw a long shadow.月光把露水照得雪白, 一座旧日规投出一条长长的影子.Late at night, through the moonlight into the casement, and a Caesar.夜深了, 月光透进了窗扉, 撒了一地.Putrefied and moonlight casts a bas...