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trough of wave [英] [ˈtrɔ:f ɒv weɪv] [美] [trɔf ʌv wev] [短语] 波谷 词频排名 54815/55435 学习人数 72 难度等级 7/10 认知比例 40.74% 例句 economical trough of wave 经济低谷 "Because of its own gravity, its direction is from wave crest to trough of wave." 由于本身的重力作用,其运动方向是从波峰到波谷。 peaks and troughs of waves 波峰和波谷 助记 联想 trough 水槽
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