Physics teaching depends on teaching physics exercises, if want to improve the quality of the physics teaching, should improve the effectiveness of teaching physics exercises.

物理教学离不开物理习题教学，若要提高物理教学的质量，就应提高物理习题教学的有效性。

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Strengthen the teaching of physics demonstration experiment is to improve the quality of teaching physics in secondary schools as an important issue.

加强演示实验教学是提高中学物理教学质量的一个重要方法。

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On the effects of nuclear physics courses in scientific quality education.

关于原子核物理教学在科学素质教育中的作用。

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There's an off-the-cuff quality to the storytelling here -- the movie rewrites its own laws of physics whenever it's convenient to do so -- which by rights should be a bigger problem than it is.

CNN: Review: 'Iron Man 3' a sweetly calibrated blockbuster