双层渗透泵控释片
bi-layer osmotic controlled release tablets
单层渗透泵控释片
single-layer osmotic pump controlled-release tablet
单层渗透泵片
elmentary osmotic pump tablet
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
<凝>胶<渗>透层析术
gel permeation chromatography
储层渗透率
reservoir permeability
permeability of coal seams