Baf
abbr. baffle 挡板; bunker adjustment factor 煤仓调节系数
🗣️ 情景例句
You're probably right.
也许你说得对。
What's the population of China?
中国有多少人口？
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）。