swing door

基本解释双开式的弹簧门

网络释义

1)swing door,双开式的弹簧门2)double acting door,双开弹簧门3)single double spring door,单扇双开弹簧门4)double acting spring door,双面弹簧门5)double valve spring,双气门弹簧6)spring loaded valve,弹簧加载式阀门

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