电气中的tracing一般指什么? 是厂商电气供应范围中的一段话:Vendor shall supply and install all necessary field electrical/equipment, eg, motors, control station or box, including protection housing, tracing , tubing, cabling, conduit, cable tray, installation construction materials, etc required for the safe operation, start-up, shutdown and emergency shutdown of this Package Unit. 常看到 tracing 这个词,具体不清楚指的什么,望专业人士请教! 查看更多5个回答 . 3人已关注