double bar超棒眼doubleadj.双重的；成双的；两倍的v.翻一番；使 ... 加倍n.两倍；双份double-burned dolomite二次煅烧的白云石加氧化铁double-pivoted pattern双支枢式,双轴尖式double-o-tube shield双圆盾构double-deck classifier双层分级机double current signaling双流信号法double cover plate joint双盖板结合double-cropping system一年二熟double mixing technology双掺技术double linear prediction双线性预测double-length notation双倍长表示法, 双长表示法

1. He is working double tides to finish his essay.
   他日夜苦干，赶写他的文章。