The expanded tube is thin wall casing with open mouth.
胀管为开口薄壁套管；
A kind of thin wall casing made of AZ91D alloy for pocket computer and mobile phone is manufactured by die-casting.
用AZ91D镁铝合金压铸生产手机和笔记本电脑的结构件时，产品表面会出现爆痘、白点和黑色絮状物等缺陷。
A kind of thin wall casing made of AZ91D alloy for pocket computer and mobile phone is manufactured by die-casting.
用AZ91D镁铝合金压铸生产手机和笔记本电脑的结构件时，产品表面会出现爆痘、白点和黑色絮状物等缺陷。
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