H 的焊接常用的方法是热接触焊接和使用焊条进行热气焊。

PP-H welding method is commonly used in thermal contact welding and the use of hot gas welding electrode .

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H 的焊接常用的方法是热接触焊接和使用焊条进行热气焊。

PP-H welding method is commonly used in thermal contact welding and the use of hot gas welding electrode .

youdao