steel stucture 中文意思是什麼
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A study of the heattreat process and the stucture on steel bonded carbide dgjw
40鋼結硬質合金組織評價與熱處理工藝研究 -
Welding equipment consist of frame, automatic tracing stucture, automatic submerged arc - welding system and flux automatic recycling equipment, carry through automatic tracing and continues welding in the joins of steel cylinder
焊接速度快，勞動生產率高，設備自動化程度高，在焊接過程中，可任意改變焊接速度，設備佔地面積小
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