“ 屏蔽 ” 条件也叫做 “ 选通. ”The " mask " facility is also often called the " enable ".取补线路可任意选通减法器的输出或补取线路的输出.A complementing circuIt'selects either the subtracter output or the output of the complementing circuit.双向三极型可控硅 ...
《牛津化学初级读本》丛书旨在论述有机化学中的重要问题。The Oxford Chemistry Primers aim to cover important topics in organic chemistry.老读本选文诱导儿童边读边思考.The old books contain selections that invited critical reading.读本篇课文的第五段和最后一段.Read the fifth and t...