In the third part, pondering for the teaching's theory about black box in senior teaching physics, I propose educational value of black-box in the middle school physics teaching.
第三部分为黑箱在中学物理教学中应用的理论思考，通过对黑箱特点的分析，阐述黑箱在中学物理教学中的教育价值和应用的原则。
To demonstrate gas laws at physics teaching in senior middle schools. Used for proving Boyle-Mariotte's law, Charles's law, Gay-lussca's law and equation for gases.
中学高中物理演示气体定律作用。可验证玻意耳一马略特定律、查理定律、盖吕隆克定律和理想气体状态方程。
The momentum and the theorem of momentum is one of key in the physics teaching of senior middle school.
动量与动量定理是高中物理教学的重点之一。
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