短语词组短語wave -crest soldering 波峰銲wave crest length [海洋]波峰長度;波峰寬度wave crest velocity 峰速wave crest and trough 波峰及波穀current wave crest ratio 電流波峰比wave crest coefficient 波峰系數wave crest ratio 波峰比wave crest line [海洋]波鋒線 返回 wave crest