doublestubn.双截线(双短线)doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double-precision floating-point matrix双精度浮点矩阵double-face transposition of chain board双面输送链板Double--eccentricity half-ball valve双偏心半球阀double groove continuous extruding machine双槽连续挤压机double fiber Fabry-Perot interferometers双光纤Fabry-Perot干涉仪Double-blind randomized controlled trial双盲法double-axis half-ellipse flexure hinge双轴半椭圆弹性铰链double-layer reticulated spherical shell双层球面网壳double-action variable displacement motor双向变量马达double-arched tunnel with biased pressure偏压连拱隧道