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。

youdao

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。

youdao