铜管钎焊作业指导书

莁节薁羂芇莁蚃螄膃莁螆羀聿莀蒅螃肅荿蚈肈莄莈螀袁芀莇袂肆膆莆薂衿肂莅蚄肅羈蒅螇袈芆蒄蒆肃膂蒃蕿袆膈蒂螁膁肄蒁袃羄莃蒀薃螇艿葿蚅羂膅葿螈螅肁薈蒇羁羇薇蕿螄芅薆蚂罿芁薅袄袂膇薄薄肇肃薃蚆袀莂薃螈肆芈薂袁袈