点击下载:《大学物理》课程PPT教学课件:课程PPT教学课件(英文版)Chapter 1 Introduction
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Time Units seconds, s in all three systems Defined in terms of the oscillation of radiation from a cesium atomTime ◼ Units ◼ seconds, s in all three systems ◼ Defined in terms of the oscillation of radiation from a cesium atom
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点击下载:《大学物理》课程PPT教学课件:课程PPT教学课件(英文版)Chapter 1 Introduction
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