unattended pumper是什么意思，unattended pumper的翻译，unattended pumper音标、读音、用法和例句

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unattended pumper是什么意思，unattended pumper的翻译，unattended pumper音标、读音、用法和例句_伍贰汉英词典

unattended pumper

基本解释

专业释义

能源科学技术