控制器通常有错误发现者和喇叭筒.The controller usually consists of an error detector and amplifier.他用喇叭筒叫卖, 省劲多了!He hawks with a megaphone, saving a lot of effort.喇叭筒对于使用西元574A应该 在500仟赫有可接受的环增益.The amplifier should have acceptable loop ...
Objective To probe the effects of lumbricus on wound healing after hemorrhoidectomy.目的探讨地龙对痔术后创面愈合的影响.Objective: To observed and evaluate the effectiveness of stapled hemorrhoidectomy.目的: 为观察和评估痔切闭术的优缺点.Objective To stud...