液体泵和泵机组　通用安全技术规范Liquid pumps and pump units—General safety technical specificationICS 23.080CCS J 71中华人民共和国国家标准GB/T 44688—20242024-09-29 发布2025-01-01 实施国家市场监督管理总局国家标准化管理委员会发 布目　　次前言 ······················································...