On the basis of the theory of energy conversion, the direct and indirect methods for recovering engine's residual heat are introduced in this paper.
本文以能量转换理论为基础，阐述了内燃机余热利用的两种方式——间接利用和直接利用。
It aimed at practical problem and discusses how to analyze energy conservation and conversion in the electric field through physical theory.
针对一些物理实际问题，探讨如何利用物理思想分析电场能量的守恒与转换。
The so-called linear motor is the use of electromagnetic theory, electrical energy direct conversion of kinetic energy linear motion equipment.
所谓直线电动机就是利用电磁作用原理，将电能直接转换直线运动动能的设备。
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