2019-11-12 09:59:55
sawchina
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焊接程序不要求時焊工的鑒定考試規范-鋁及其合金的TIG或MIG
BS 4872-2-1976 Specification for approval testing of welders when welding procedure approval is not required - TIG or MIG welding of aluminium and its alloys 下載地址：
鏈接：https://pan.baidu.com/s/14rTzyEuUllNq7pBNUTMD-A |
