目前在攀长钢，不合理的LF精炼工艺已经成为制约“电弧炉—LF炉—（VD/VOD炉）—连铸或模铸”高效炼钢的瓶颈。
Nowadays in Changcheng Steelworks, the unreasonable LF process has become the bottleneck for high speed steelmaking of "EAF-LF-(VD/VOD)-CC/ingot casting".
公钥密码实现中，模逆算法经常是算法实现的瓶颈。
Usually modular inverse operation becomes bottlenecked in realizing the public key cryptosystem.
汽车结构件形状复杂、成形难度大，其条料设计是级进模工艺设计中急需解决的难点和瓶颈问题。
The strip layout of automotive structural parts in the process design of progressive die is the major difficulty and the bottleneck problem to be solved urgently.
汽车结构件形状复杂、成形难度大，其条料设计是级进模工艺设计中急需解决的难点和瓶颈问题。
The strip layout of automotive structural parts in the process design of progressive die is the major difficulty and the bottleneck problem to be solved urgently.
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