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The electric constant force hinge of the utility model has convenient operation and low cost.
本 实用新型的电动恒力铰链操作方便、成本低廉。
youdao
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The utility model relates to a constant pressure deflation valve.
本实用新型涉及一种定压放气阀。
youdao
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The utility model relates to a constant pressure deflation valve.
本实用新型涉及一种定压放气阀。
youdao