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39—1 请从下列词语中选出合适的词语,并将其代号填入下文的( )内。词语:①强②弱③机械的④化学的⑤电气的⑥深⑦浅⑧飞溅⑨喷射化 (1)各种焊接法是根据焊接能源的种类分类的。以这种分类法,埋弧焊属于( )能源焊接法,而摩擦焊,则属于( )能源焊接法。 (2)CO_2气体中的电弧,由于电弧力( ),焊丝端部的熔滴被推向上方的趋势将加强,所以容易产生( )。 (3)对于使用80％Ar+20％C0_2的混合气的MAG焊接,与同一焊接规范下CO_2电
39-1 Please select the appropriate words from the following words, and their code into the following (). Words: ① Strong ② Weak ③ Mechanical ④ Chemical ⑤ Electrical ⑥ Deep ⑦ Light ⑧ Splash ⑨ Jetting (1) Various welding methods are classified according to the type of welding energy. Under this classification, submerged arc welding belongs to () energy welding method, and friction welding, belongs to () energy welding method. (2) CO_2 gas arc, due to the arc force (), the end of the wire droplets are pushed upward trend will be strengthened, so easy to produce (). (3) For MAG welding using a mixture of 80% Ar + 20% C0_2, with the same welding code CO_2