But the stress-strain relationship is in complex stress condition after the necking starts.
But the stress-strain relationship is in complex stress condition after the necking starts.
但是，从颈缩开始，其应力应变关系处于复杂应力状态。
But the stress-strain relationship is in complex stress condition after the necking starts.
但是，从颈缩开始，其应力应变关系处于复杂应力状态。