单面涂层双层纸板
one-side coated duplex board
生铀层双层结构
Uranium-bearing double—layer structure
双层壁换热器
double walled heat exchanger
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
FRP-混凝土-钢双壁空心管
FRP-concrete-steel double-skin tube
FRP-混凝土-钢双壁空心管短柱
FRP-concrete-steel double-skin tubular stub
FRP-混凝土-钢双壁空心管柱
FRP-concrete-steel double-skin tube column
GAC-石英砂双层滤池
granular active carbon-sand filter
Hadley环流双层结构
bi-level structure of Hadley cell