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填料密封
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填料密封
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packing box seal
填料密封
通过填料阻塞泄漏通路实现往复或旋转相对运动界面的密封。又称压紧填料密封。
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painted matte process
painted phoenix pattern pottery Fang
Painted Pottery
painted pottery
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painted sculptures in Dule Temple
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Painted Sculptures of Shuanglin Temple in Pingyao
Painted Tombs at Liaoyang
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painting academy
Painting a Dragon Without Eyes
painting album of Kunqu opera characters by Li Yong
Painting Along the History
painting and calligraphy restoration
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