从那时起，我摄取了7,500余张X射线的照片，学到很多有关电磁能量的知识。
Since then I’ve taken over 7,500 x-ray images and learned a lot about electromagnetic energy.
本文介绍了几种在工业上应用较为广泛的余压水力能量回收装置，评述了它们的优劣。
This paper introduces several kinds of pressure - energy recovery equipment for residual hydraulic power used widely in industry, and discusses their advantages and disadvantages.
而物理模拟虚功原理及余虚功原理是物理模拟能量原理的统一理论。
And the virtual work and complementary virtual work principles for physical simulations are united theories of the energy principles for physical simulations.
但是两个系统的平衡状态的能量不同，其差值为弹簧支撑边界所吸收为系统的余能。
But the energies of the two systems are not equal, and the difference is the complementary energy adsorbed by the boundary of the spring.
催化裂化装置能量回收技术自70年代中期开始开发、应用，至今已有60余台套机组投入运行。
Since the energy recovery technology in FCC has began to develop and apply in the middle period of 70's, 60 sets of flue gas turbine have been operated up to now.
催化裂化装置能量回收技术自70年代中期开始开发、应用，至今已有60余台套机组投入运行。
Since the energy recovery technology in FCC has began to develop and apply in the middle period of 70's, 60 sets of flue gas turbine have been operated up to now.
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