Hydrosilation
硅氢化作用
🗣️ 情景例句
Thank you.
谢谢。
He learns English every day.
他每天都学英语。
and by measuring the time interval between the taps and the receipt of the echoes, the depth of the sea at that point can be calculated.
测出回声间隔的时间，便可算出该处海洋的深度。