凹底双层运输汽车专用车
depressed center double-deck cars specialized for transport of automobiles
贝雷片双导梁
beret pieces double leads girder
Bailey truss double guiding beam
衬底双极晶体管
substrate bipolar transistor
单孔双线车站隧道
single-hole and double-line station tunnel
二元函数分片双一次插值算法
double-linear interpolation algorithm of binary function