对于许多区域水资源问题，用数值方法进行潜水水流模拟时，需要给出每个节点上含水层底板标高值。
In many cases of regional water resources issues, when numerical method is often adopted in groundwater flow modeling lower bed level value of aquifer on each node should be given.
主机移放到机座后拆除运输底座，安装好线条板底板，将螺丝千斤顶按安装位置安放，将主机按坐标和标高就位到离地面100 mm。
Remove the transport seat pads when the engine is shifted on the engine base, install the line plate baseboard, and place the screw jacks according to the installation position.
主机移放到机座后拆除运输底座，安装好线条板底板，将螺丝千斤顶按安装位置安放，将主机按坐标和标高就位到离地面100 mm。
Remove the transport seat pads when the engine is shifted on the engine base, install the line plate baseboard, and place the screw jacks according to the installation position.
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