For correct placement, the volume of slurry and the displacement fluid must be carefully calculated and measured.

为正确地安置水泥塞，水泥浆的用量和驱替液必须仔细地经过计算和计量。

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For correct placement, the volume of slurry and the displacement fluid must be carefully calculated and measured.

为正确地安置水泥塞，水泥浆的用量和驱替液必须仔细地经过计算和计量。

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