... pier [building] 支柱〔建筑物〕 pipe barrel 管筒 planned vacancy 有计划腾空的单位 ...
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barrel of pipe 管膛
pump barrel pipe 泵筒管
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The motor drives the rotating rack to rotate through the belt pulley; and the cross bar and the pipe barrel beat the soybean plant for threshing.
电机通过皮带轮带动转动架转动，横杆和管筒拍打大豆植株脱粒。
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This somewhat dangerous device had a six foot barrel, was made out of PVC irrigation pipe of varying diameters, and was powered by compressed air.
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