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- The reconstruction signals were demodulated with Hilbert transform, and envelope spectrum at each band was obtained. 利用希尔伯特变换解调分析各频带信号,得到对应频带信号的包络谱;
- A new envelope demodulation method based on empirical mode decomposition (EMD) is proposed to make up the limitation that meaningless frequencies often arise in the envelope spectrum of conventional envelope demodulation method. 摘要提出了一种新的调制信号解调分析技术,来抑制传统的包络解调方法中经常出现的无意义的频率成分。
- wavelet multi scale envelope spectrum 小波多尺度包络谱
- IDENTIFICATION OF THE WEAR OF METAL SLIDING FRICTION BY NOISE ENVELOPE SPECTRUM 金属滑动摩擦磨损的噪声包络谱识别
- Study on Faults Diagnosis of Bearing Based on EMD and Envelope Spectrum 基于EMD和包络谱分析的轴承故障诊断研究
- Have you stuck down the back of the envelope? 信封背面开口处贴牢了吗?
- He steamed the stamp off the envelope. 他用蒸汽把信封上的邮票揭下来。
- He glued a stamp onto the envelope. 他把邮票贴在信封上。
- As he picked up the envelope, a key dropped out. 他拣起信封时,一把钥匙掉了出来。
- As she picked up the envelope, a key dropped out. 她拾起信封时,一把钥匙掉了出来。
- Put a stamp on the envelope, will you? 在信封上贴张邮票,好吗?
- He stuck a stamp on the envelope. 他在信封上贴上邮票。
- The survey covered a broad spectrum of topic. 这本简史涉及的话题范围很广。
- She opened the envelope with her fingertips. 她用指尖弄开了信封。
- The envelope's seal was torn open. 信封封缄被撕开了。
- The (flap of the) envelope was unstuck. 信封(的封口)没粘住。
- There are several enclosures in the envelope. 信封内装有几份附件。
- An envelope or wrapper for mail. 封套,信封为邮寄而制的信封或封套
- Red and violet are at opposite ends of the spectrum. 红色和紫色位于光谱相对的两端。
- A Fault Diagnosis Approach for Roller Bearing Based on SVM and EMD Envelope Spectrum 基于SVM和EMD包络谱的滚动轴承故障诊断方法
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries