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PT與ZG螺紋一樣嗎,? |
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點(diǎn)評(píng)
標(biāo)ZG都懂,標(biāo)Rc,、Rp,,R1,,R2,好些人不明白,。
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點(diǎn)評(píng)
G螺紋,加金屬組合墊或者銅墊,。組合墊拆裝幾次就得更換了,,銅墊抗造。
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