How to shield the difference among the distributed heterogeneous database is the primary problem to be solved to implement the mutual visiting among the multiple databases.

如何屏蔽分布在不同站点上的异构数据库之间的差异，是实现多个数据库互访要解决的首要问题。

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Results show that this method judges the thrust system effectively and is dependable basis for drive distribution control when shield tunneling machine thrust in heterogeneous soil.

结果表明，该方法能够有效评价推进系统状态，并可为盾构机异质岩土掘进时驱动力分配的控制提供依据。

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