A metering tank is an elementary method of measuring volume flow.量筒是测定容积流量的基本方法之一.Practical flow - metering devices have become available commercially.实用的流量测量装置已在工业上使用.A nearly constant air - fuel ratio is maintained by ...
The rules state that samples must be enclosed in two watertight containers.规则要求样本必须装在两个水密容器中。We're giving away 2000 free samples.我们正免费发放2,000份样品。They took samples of my blood.他们取了我的血样。...
Can you unfasten the lock catch of a box?你能解开箱子的锁扣 吗 ?Do not unfasten the seatbelt before the plane stops completely.在飞机纯粹停止前,不要松开安全带.When Ted was six we decided that he needed to know how to fasten and unfasten his seat...
他们有一把低音吉他、一架钢琴、一管萨克斯和打击乐器。They had a bass and a piano and a sax and percussion.两小提琴与通奏低音三重奏a trio for two violins and continuo低音单簧管在木管乐组中形成浓重的低音.The bass clarinet forms a solid bass for the woodwind group....
The melancholiac has fallen into a fixed condition of despondency.忧郁症患者.这种病人陷入沮丧.Now he bathed himself in despondency.此刻他就沉浸在怅惘之中." To collect what's left over ,'smiled Wu Sun - fu , his look of despondency van...
细胞的这种向里推进标志着原肠胚形成的开始.This pushing - in of cells marks the start of gastrulation.外胚层囊胚的外层,在原肠胚形成之后生后外胚层组织.The outer layer of a blastula that gives rise to the ectoderm after gastrulation....