作者认为传质速度的增加是由于入口效应所引起的。

This increase in the mass transfer rate is thought to be due to the existence of an entrance effect.

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因此，设备的前进速度是由入口处管道顶进速度决定的。

As the machine advances, more tunnel liner is pushed from the entrance.

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因此，设备的前进速度是由入口处管道顶进速度决定的。

As the machine advances, more tunnel liner is pushed from the entrance.

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