Lamellar tearing of steel is a kind of very dangerous defect of the welding steel bridge and normally takes place at the fillet welding joint.是什么意思_Lamellar tearing of steel is a kind of very dangerous defect of the welding steel bridge and normally takes place at the fillet welding joint.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句