柴油机双层隔振系统
vibration isolation system
单面涂层双层纸板
one-side coated duplex board
机－机双基地雷达
bistatic radar onboard airplane
生铀层双层结构
Uranium-bearing double—layer structure
双层双跨混凝土框架
double-story and double-span RC frame
双层双曲抛物面网格壳
hyperbolic parabolic double-deck reticulated shall
双层双扇形
double-layer twin fans shaping
双飞机圆周飞行瞬时像
two airplane circulars plying instantaneous imaging
双机双桨
double engine and double oar
Double Engines and Propellers