Heat transfer coefficients in a packed bed have been investigated by Leva and Beck.填充床的传热系数已由利瓦和贝克作过研究.Quand l'examen fut fini ____ deux heures , l'examinateur se leva et embrassa le candidat.Chacun在这里是什么用法?...
提出一种新颖的双降压式交流斩波器.A novel bi - directional dual Buck AC chopper is presented in this paper.因此, 内反馈斩波调速装置是风机水泵调速节能的首选设备.Finally, the internal feedback chopper regulator is the preferred equipment of fan and water pump regu...
I happened to bump into Mervyn Johns in the hallway.我在走廊里意外碰见了默文·约翰斯。The leads are Jack Hawkins and Glynis Johns.杰克·霍金斯和格莉妮斯·约翰斯主演。a pair of long johns一条长衬裤...
在孤注一掷地闪电战中他猛冲过外国领地.He careened through foreign territories on a desperate kind of blitz.虽然他的行动在当时看来就像一场闪电战, 但他后来却后悔自己没能更快.And though he acted with what seemed at the time like blitzkrieg aggressiveness , he regretted in ...