图 4-9 中使用的机械式继电器, 可以用电子开关来代替.The mechanical relays , which have been assumed in Fig . 4 - 9 , can be replaced by electronic switches.用继电器操作的一种可视信号或音响信号装置, 用以指示有关电路的情况.A visual or audible signaling device , operated by re...
They glanced at the man on the floor, who began to groan...他们瞥了一眼躺在地上的男人，那人现在开始呻吟起来。Dorothea let out a histrionic groan.多罗西娅装腔作势地呻吟了一声。His parents were beginning to groan about the price of college tuition.他的父母开始抱怨大学的学费太...
干裂和纵裂可能与再湿有密切联系.Splits and checks may close with rewetting.目的分析 牙根 纵裂的致病因素.Objective To study the pathogenic factors of vertical root fractures ( VRFs ).目的: 探讨大脑间纵裂血肿的手术治疗.Objective : To discuss surgical treatment of int...