军士是海军的骨干。Petty officers are the backbone of a navy.军士为部下不整洁的服装而责骂他们.The sergeant lashed the troops for their sloppy dress.将军表扬这位勇敢的军士.The general commended the sergeant for his bravery....
具备物理学电声学机械学的知识.Knowledge of physics, acoustics and mechanics.摘要游泳馆的语言清晰度设计是建筑声学和电声学的综合设计.Both the architectural acoustics and electroacoustics are used in the language articulation design....