The statement of the conservation and transformation of energy is as follows.
能量守恒与能量转换可表述如下。
The law of conservation and transformation of energy is the chief basis of engineering practice.
能量守恒和能量转换定律是工程实践的主要基础。
The law of conservation and transformation of energy is the chief basis of physical, astronomical and chemical reasoning as well as engineering practice.
译：能量守恒和能量转换定律，不仅是工程实践的主要基础，而且也是物理、天文以及化学等方面推理的主要基础。
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