Two types of boundary conditions are considered: pin-roller ends and fixed ends.需要考虑两种类型的边界条件XXX和固定端。 pin-roller end到底是什么啊
Two types of boundary conditions are considered: pin-roller ends and fixed ends.需要考虑两种类型的边界条件XXX和固定端。 pin-roller end到底是什么啊
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