The primary resonance and its stability of a harmonically forced oscillator with a pair of symmetric setup elastic stops are studied in this paper by means of average approach.
用平均法研究了含预紧弹性约束的单自由度系统在简谐激励下的主共振及其稳定性。
The article to at89C51 monolithic integrated circuit chip, the crystal oscillator, various primary devices which as well as the pressed key control model involved has made the detailed introduction.
文章对AT 89 C 51单片机芯片，晶体振荡器，涉及到的各元器件以及按键控制模型做了详细的介绍。
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