Sometimes things have to fall apart to make way for better things.有时候要到达谷底，才会慢慢变好。I'm trying to be more centred, and not fall apart when I go through difficult things.在我经历艰难困苦之时，我努力让自己保持镇定自若，不要崩溃。Many of these guys ...
Electric Furnace with double deslagging or in the basic oxygen furnace.如双除渣电炉或基本氧炉.The deslagging of acid welding material is better than that of base welding material.酸性焊材脱渣性优于碱性焊材....