double-frequency vibration

基本解釋

The vibration natural frequency of aluminum alloy double-layer cable dome is analyzed and several factors of the reticulated shell are considered as well.
分析了肋環(huán)型鋁合金雙層球面網(wǎng)殼結(jié)構(gòu)的自振特性，考慮了結(jié)構(gòu)多種參數(shù)的影響，并且與同種結(jié)構(gòu)形式的鋼網(wǎng)殼進(jìn)行了對比。
The phenomenon of beats can be observed directly on the double-channel oscillograph and the frequency of alternating current can be measured by the vibration curve of the beats.
在雙通道示波器上可直觀地觀測拍現(xiàn)象，并利用拍振動曲線測量交流電的頻率。
The synthesis of under-damping vibrations with the same frequency at two mutual vertical directions is studied and investigated using Model JGYW-2 double-single vibration apparatus.
利用JGYW 2型雙單擺振動示波裝置對兩個(gè)相互垂直方向的同頻率欠阻尼振動的合成進(jìn)行了實(shí)驗(yàn)研究和理論分析，得到了欠阻尼振動合成的部分圖形和表達(dá)式。