1.
air transmission coefficient
透气系数，空气透过率
2.
Opacity: Degree of obstruction to transmission or reflection of light.
不透明度:阻碍光线透过的程度。
3.
Impermeable by gas.
不透气的气体不能透过去的
4.
Materials through which no radiation is propagated are called opaque.
辐射线不能透过的物质叫不透明体。
5.
Study on Permeating Behavior of Some Gases and Moisture Across PTFE Membrane;
ePTFE膜气体透过和透湿行为的研究
6.
He was looking something through a telescope.
他在透过望远镜看东西。
7.
addressed us over the loudspeaker
透过扩音器对我们演讲
8.
see or show a way into or through(sth)
看穿或透过（某事物）
9.
Emergent light is no longer continuous.
透过的光不再是连续的。
10.
We couldn't see through the mist.
我们无法透过薄雾看见。
11.
The river was visible through a light mist.
透过薄雾那河隐约可见.
12.
Sunlight percolated through the thick leaves.
阳光透过浓密的树叶。
13.
We should see through the appearance to the essence,
我们要透过现象看本质。
14.
We saw a spark of light through the trees.
我们透过树丛看到闪光。
15.
colour fastness to light through glass
耐透过玻璃的光色牢度
16.
I saw it through the window pane.
透过玻璃窗我看到了它。
17.
Admitting the passage of light; transparent or translucent.
透明的，清澈的光可通过的；透明或半透明的
18.
To diffuse or cause to diffuse by osmosis.
（使）渗透通过渗透作用渗出或使渗出