对策，进度，风险评估，基本物理学。

Strategy, Schedule, and Risk Assessment, Basic Physics.

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理论是21世纪基本物理学研究的重要前沿阵地。

M theory is the most profound theory of physics in 21st century.

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基本物理概念是物理学习的核心。

Basic physics concept is the core in physics learning.

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基本物理概念是物理学习的核心。

Basic physics concept is the core in physics learning.

youdao