A complete pumping installation, comprising a pump, a source of power, and any necessary pipes, valves, filters, etc.
Late 19th century; earliest use found in William S. Gresley (fl. 1883).
英汉双解词典包含464360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。