The process of transforming abstract information into more detailed data is manual, and therefore unreliable and inefficient.

将抽象的信息转换为更详细的数据的过程是手工的，并且因此是不可靠且效率低的。

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The process is costly and can be unreliable as the expansion of the inner ring is controlled indirectly by measuring axial displacement of the ring, rather than the expansion of the inner ring itself.

这个过程是昂贵的，可作为内圈膨胀是不可靠的间接控制，通过测量轴向位移的戒指，而不是内环本身的扩展。

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The process is costly and can be unreliable as the expansion of the inner ring is controlled indirectly by measuring axial displacement of the ring, rather than the expansion of the inner ring itself.

这个过程是昂贵的，可作为内圈膨胀是不可靠的间接控制，通过测量轴向位移的戒指，而不是内环本身的扩展。

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