这两处的service如何理解?(关于PID说明)? 1. Show line designation of major process and utilities lines including service symbol , line number, size, spec, insulation requirement. 2. Process data required for completion of instrument datasheets of control valve, flow meter, analyzer etc. Safety Relief Data indicating process services (not including utilities, fire case, etc) . 介质?应用? [ ]查看更多10个回答 . 5人已关注