level surface短语⁶⁹⁹⁶⁰ 基本例句 位势面,等位面,水准面 The results show that fine grains and level surface of the deposits can be got by increasing electrolyte flow velocity and scanning speed of nozzle at the same current density. 研究结果表明，在电流密度相同时，增大电铸液喷射流速、提高喷嘴移动扫描速度有利于获得颗粒细小、表面平整的铸层； cnki