2798| 19
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三通換向閥 |
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點(diǎn)評(píng)
球閥是球面,這個(gè)是圓柱面,而且球閥是特制的密封圈
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點(diǎn)評(píng)
密封槽不是標(biāo)準(zhǔn)的圓形,不知道行不行
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