single beat valve的意思|示意
单节拍阀
single beat valve的网络常见释义
单层阀 ... 单层底 single bottom 单层阀 single beat valve; single-beat valve 单层弗 single deck floating roof ...
single beat valve相关短语
1、 single-beat valve 单层阀
2、 single-beat main stop valve 单座式主汽门
3、 single beat poppet valve 单层提动阀