Do not walk under any pipe resting on the V-door ramp.

不允许在放有钻杆的大门坡道下边通行。

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The ramp and bottom areas only applied one coat in crude oil tank, but all fittings, support, pipe and bulkhead should be finished two coat.

货油舱底所有舾装件、支架、管子、纵壁和横舱壁二度全部结束。

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First, they started with half-pipe and vert ramp skateboarding.

首先，他们开始使用半管和垂直坡道滑板。

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