小弟又来了,how old are u?怎么老是你?T-T? Where lower designtemperature is indicated as below -101 Deg C, welds are to be made inaccordance with a welding procedure qualified by impact testing as required byASME B31.3. 这句话小弟搞不定了,前面的主标题和副标题分别为“冲击试验”----“奥氏体 不锈钢 ”。求教万能的各位盖德们!!!Thanks! 查看更多2个回答 . 2人已关注