In this paper, we divided the double frequency crystal into numerous small double frequency units and derived the harmonic power and the double frequency efficiency in each unit.
本文中将倍频晶体分割成无数多个小倍频单元，并导出每个倍频单元中的谐波功率与倍频效率。
The paper introduced a frequency measure system composed of double 8051 chips, presented the realized schemes of the hardware and software, and analyzed system 's efficiency.
本文介绍了一种由双8051芯片构成的频率测量系统，给出了其软硬件系统实现的方案，并对该系统效率进行了分析。
The efficiency of a parallel connection double-pump irrigation System is not only related to the break - down and recovery frequency but also to the operation and maintenance fashion of the System.
双泵并联灌溉系统的有效度不仅与机组故障率和修复率有关，而且与系统的运行方式及维修方式有关。
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