or操作: operate; manipulate; handle性: nature; character; dispositi ...研究: study; research操作性研究: operational research危害与可操作性研究: hazo =hazardandoperabilitystudy; hazops =hazard and operability study下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:操作性研究操作性研究,即可在微信中查询翻译