parallel arm installation type [door closer]

基本解释平行臂式(门气鼓)

网络释义

1)parallel arm installation type [door closer],平行臂式(门气鼓)2)barrel-type throttle,鼓式节气门3)Door Closer,门头气鼓4)tympanic spiracle,鼓膜气门5)door closer,门掣;门气鼓6)valve corss arm,气门横臂

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