显式分析数据检查时出现的错误提示，请大神指点修正。

12news

1.The option *boundary,type=displacement has been used; check status file between steps for warnings on any jumps prescribed across the steps in displacement values of translational dof. For rotational dof make sure that there are no such jumps. All jumps in displacements across steps are ignored.
2.The slave surface nodes in node set WarnNodeMassRatio3fix-Step1 have much larger masses than the nodes on the master surface. Significant contact noise may result. Suggested workarounds include setting the WEIGHT parameter so that what was the master surface becomes a pure slave surface in the contact pair, using mass-scaling to adjust the ratio of nodal masses, or using the penalty contact algorithm. See the status file for further details.