多重交替阶段 multi-stage (or multiple stage): 多级式,多段式multi-effect multi-stage vaporizer: 多效多级闪蒸蒸发器centrifugal multi stage pump: 多级离心泵compression; multi-stage: 多级压缩integrated multi-stage approach: 综合性多阶段办法下载手机词典可随时随地查词查翻译