短語(yǔ)詞組短語(yǔ)wave crest and trough 波峰及波穀dicrotic wave trough 重搏波穀long -wave trough [氣象]長(zhǎng)波槽short wave trough 短波槽long wave trough 長(zhǎng)波槽wave trough with motor stroboscope 水波槽頻閃儀deep wave -form trough plate 深波槽長(zhǎng)彎板trough wave 槽波seismic prospecting through trough wave 槽波地震勘探 返回 wave trough