长输管道穿越河流或水网沼泽等地下水位较高地段，必须采取浮力控制措施。
As a long distance pipeline crosses rivers or water network and swamp areas where water tables are higher, buoyancy control measures must be taken.
长输管道穿越河流或水网沼泽等地下水位较高地段，必须采取浮力控制措施。
As a long distance pipeline crosses rivers or water network and swamp areas where water tables are higher, buoyancy control measures must be taken.
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