productiveness; efficiency; productivity; workpiece ratio 短语和例子效率低 inefficient; 效率高 efficient; 提高效率 promote efficiency; 效率首屈一指 second to none in efficiency; 投资效率 the efficiency of investment; 效率就是生命。 efficiency is lifex效率: x efficiency板效率: plate efficiency; plate efficlency; tray efficiency泵效率: efficiency of pump比效率: specific efficiency睬效率: star-formation efficiency下载手机词典可随时随地查词查翻译