?单动泵
单动泵 pum(single-action; single acting); single acting pump; single-acting pump; single-action pump 单动锤 single acting hammer ..
单作用滑片泵 ; 单效用滑片泵
单作用活塞泵 ; 单效用活塞泵
三缸单作用泵
英汉双解词典包含3185865条英汉词条,基本涵盖了全部常用单词的翻译及用法,是英语学习的有利工具。