关于泵的密封要求? mechanical seals preferred. john crane or equivalent: double mechanical cartridge type, barrier water flow to and from seal, as specified by vendor below. 我有两个疑问; 1: barrier water到底如何理解和翻译; 2: as specified by vendor below 是应该翻译成:按照以下供货商所规定的规格参数要求(进行设计和采购),还是翻译成: 由如下供货商指定,我对此还是比较疑惑。查看更多