PS-PVA双层球
PS-PVA double layer microspheres
SQ3K型双层运输汽车专用车
SQ3K double-deck special car for transport of motor cars
SQ5型双层汽车运输专用车
SQ 5 double deck car specially for transport of automobiles
凹底双层运输汽车专用车
depressed center double-deck cars specialized for transport of automobiles
柴油机双层隔振系统
vibration isolation system
常规双层完井
conventional two zone completion
超薄双层靶
ultrathin double-layer target
大口径双层螺旋保温风管
large diameter two-layer spiral insulating air duc
大跨空间双层网壳结构
double lay long span space reticulate shells
带床梯及护拦的双层床
bunk bed with ladder and guard rail
单洞双层
Sole hole double deck
single tunnel with dual layers
Single Cavern and Double Layer Tunnel
单双层炉排
single and double fire grates
单双层球面扁网壳
single-layer and double-layer reticulated spherical shallow shells
单双层球面网壳
single-double layer reticulated dome
Single-layer and Double-layer Reticulated Spherical Shell
单双层谐衍射元件
Single-layer and double-layer harmonic diffractive
等效双层地基
equivalent-double-layered ground
地壳双层模式
Double-storey pattern of the crust