An impermeable cover is utilized to impound the stream . 用不透气的覆盖物把蒸气盖住。
2.
"you're standing right in a draft," someone said to him . “你站在透气口上，”有人对他说。
3.
The rooting medium should be moist, well aerated, and sterile . 生根的基质应当是湿润，透气良好和消过毒的。
4.
I knew they were just thatch and must be brittle, porous, and light . 我知道那是茅草屋，盖得薄薄的，轻而透气。
5.
On ground of raised beds, an impermeable cover is utilized to impound the steam . 在地面上高位栽培床用不透气的覆盖物把蒸气盖住。
6.
The permeation constant of gases through metals is negligible except for hydrogen through palladium or iron . 除了氢气能穿过钯和铁之外，气体穿过金属的透气常数是可以略而不计的。
7.
Progress in repellent finishes has followed logical path, from occlusive coatings to those that permit the fabric to breathe . 防护整理上沿着正确合理的道路前进，即从堵塞式涂胶进步到通风透气的整理。
8.
Likewise, diffusion-controlled processes such as gas permeability are all dependent, to some extent, on molecular orientation and crystallinity . 同样，扩散控制诸如透气在一定程度上取决于分子排列和结晶度。
9.
There are changes in mechanical properties of the fabric such as weight, thickness, stiffness, permeability, or breaking strength and elongation . 有织物机械性能的改变，诸如重量，厚度，硬度，透气，断裂强力和伸长度等性能的改变。
10.
Corundum and chrome - corundum purging plugs for ladle refining 刚玉铬刚玉透气砖
