双盘式浮顶在整个罐面积内有两层钢板。
The "double-deck" type employs two separate decks of steel plate over the entire tank area.
如果他没有在抢七中双发失误而失掉第三盘？
What if he had not produced a double fault to lose the third set tiebreak?
双辐条式方向盘，动力转向。
Double spoke type steering wheel steering instructions, power steering.
造船工业。救火水管。双铰链卷盘。
造船工业。救火水管。双铰链卷盘。
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