doublenessn.二倍诡计doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double cylinder-type thresher双滚筒式脱粒机double metallic standard system复金属本位制double clad single-mode fiber双包层单模光纤double spring-ejecting device双弹顶装置double superheterodyne receiver双变频超外差接收机double-beam spectrophotometer双光束分光光度计,双束分光光度计double contrast enema technique双对比灌肠造影术double triaxialcollapsible test双线法三轴湿陷试验double refraction of shear wave横波双折射double-fold-eyelid-plasty重睑成形术