In strong-field physics, nonlinear phenomena occupy an important position.

强场物理中，非线性现象占据着重要的地位。

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These include dynamically induced irreversibility and the strong-field index enhancement.

主要考虑强场折射率增强和动态不可逆性。

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It's refreshing to see a strong curious clever woman adding her voice to the scientific discourse and a field that has been traditionally dominated by men.

看到一位充满强烈好奇心的聪明女性加入科学讨论，并进入传统上由男性主导的领域，这现象令人耳目一新。

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Dredge, though, was one of the ten in an 83-strong field that safely secured one of the sought-after qualification places to play Great Britain's golfing major at St Andrews, the home of golf, between 15-18 July.

BBC: Welsh golfer Bradley Dredge secures Open qualification

Third place in the 17-strong field, two and a half lengths away, was 9-1 chance Aqaleem, ridden by Richard Hills.

CNN: Dettori triumphs in Derby at last

Usually around half of the 140-strong field at a tournament will be cut at the halfway stage, but Parnevik's 18th-hole miss meant that the weekend ranks were swelled to a number not seen since the 1981 Travelers Championship.

CNN: Golfer's 'birdies for Boston' bid boosted by freak finish