具有直接或间接加热的阴极的电子管四极管.Tube tetrode with directly or indirectly heated cathode.拖到绘图页后,可以添加具有直热式或旁热式阴极的电子管四极管.Drag onto the page to add a tube tetrode with directly or indirectly heated cathode....
区是两个邻近界标之间的区域.A region is an area lying between two adjacent landmarks.何以说它们是界标?In what sense are they landmarks?结论: 从上切牙到食道镜检查的界标和所报道的测量方法在以往的研究中已经被测量和标准化.Conclusions: Historically, landmark and report measurements in e...
As women we tend to be self-effacing and make light of what we have achieved.作为女性我们往往不喜夸耀，对自己获得的成功轻描淡写。He was a shy, self-effacing man.他是个腼腆谦逊的人。She was a quiet woman, bigboned, and self - effacing.她骨架很大, 稳稳当当, 从来不喜欢抛头露面...