The approach ramp is a double deck roadway structure.
该引桥坡道是双层公路桥。
Base structure: double deck multistage lifting or skid-mount type.
底座形式：双层多级升降或撬装式。
Double deck cutting device with small feeding load, more suitable for high crop harvesting.
双层切割装置，喂入负荷小，更能适应产量较高的作物收割要求。
The "double-deck" type employs two separate decks of steel plate over the entire tank area.
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.
双盘式浮顶在整个罐面积内有两层钢板。
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