焊根坡口 的英文怎麼說
中文拼音 [hàngēnpōkǒu]
焊根坡口
英文
root groove-
5 all single - sided groove joints in nickel alloys, stainless steel and ferritic alloys containing more than two ( 2 ) percent chromium shall be welded using a gas tungsten - arc root pass with an inert gas back purge
鉻含量超過2 %的鎳合金、不銹鋼和鐵素體合金的單面坡口焊道用鎢極氣體保護焊,其根部焊道用惰性氣體反吹。
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