double gapadj.双火花间隙的doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double-barreled pistol双管手枪double domination number双控制数double on-line standby双机热备double emulsion adjuvant双乳化佐剂double pipe heat tracing套管式热描记double-tilted line ADC双斜式A／D转换器double-channel simplex双通道单工double-axis elliptical双轴椭圆柔性铰链double back substitution双重回代double - arched tunnel偏压双连拱隧道