In acoustics he studied the propagation of sound and musical consonance and dissonance.在声学中,他研究了声的传播和音乐的和谐与不和谐.The auditorium has comfortable seating and modern acoustics.礼堂里有舒适的座椅和现代化的音响设备.Master degree, majoring in ele...
I wouldn't want to dredge up the past.我不想重提往事。He managed to dredge up a smile.他勉强笑了笑.They have to dredge the canal so that ships can use it.他们须疏浚运河河道轮船方可通航....
其他影响选坝的因素有道路, 鱼道, 船闸和筏道等.Other factors that may affect dam selection are roadways, fishway, locks, and log passages.鱼道进出口的选择:这是鱼道设计成败的关键.Choice of fishway intake is the key of success or failure....