Transmittivity
(非散射介质单位厚度的)透射率, 透射系数
🗣️ 情景例句
Do you have anything that must be claimed?
难道你没需要申报的东西吗？
We had expected much lower prices.
我们希望报价再低一些。
and a period (which is the time it takes a wave crest to travel one wave length).
和周期（浪峰走过一个波长所需的时间）。