Pressure tunnel used more round section.

有压隧洞多采用圆形断面。

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Lack a clear round, in the love section constantly repeat.

隂晴圆缺，在一段爱情中不断重縯。

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Take diagonal section cut a round graduation technique.

取斜向后分区剪圆形堆积层次。

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Take diagonal section cut a round graduation technique.

取斜向后分区剪圆形堆积层次。

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