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automatically rising platform
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自升式平台
自升式水上作业平台是一种船体四角装有大型立柱的平底船。它由牵引船舶拖送到作业地点后，用自身配备的动力设备把4根立柱沉人水底并柱支承，很少受潮水、风浪等的影响，钻孔作业稳定可靠
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