P&I diagram piping and instrument diagram
管涌
piping【水文】
暂无补充释义。
piping【水文】
暂无补充释义。
P&I diagram piping and instrument diagram
piping
piping system
piping
airtight test for refrigerant piping system【制冷】
vacuum test for refrigerant piping system【制冷】
piping support
buried piping