The element transition of thick and thin grid was restricted with inside mode, displacement restriction was added at end of circuit board.
粗细网格用内插约束单元过渡，电路板端添加位移约束。
The element transition of thick and thin grid was restricted with inside mode, displacement restriction was added at end of circuit board.
粗细网格用内插约束单元过渡，电路板端添加位移约束。
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