DC noise margin 直流噪声容限
dc bias noise 直流偏压噪声
Low-noise DC motor 低噪音直流马达
DC Output Ripple & Noise 输出纹波和噪声
DC supply noise 直流电源噪声
DC supply noise tester 直流电源噪声测试仪
DC-DC Ripple & Noise Test 涟波及杂讯测试
Although this handbook stresses DC measurements, an analysis of noise and instrument response speed requires a brief discussion of time and frequency relationships in electronic circuits.
虽然本书的重点是直流测量，但是要分析噪声和仪器响应速度的问题，就需要简单地讨论一下电子电路中时间和频率的关系。
High efficiency DC brushless motor, micro chip processor control, tooth synchronous belt drive, smooth operation, noise.
高效直流无刷马达，微芯片处理器控制，齿行同步皮带传动，运行平稳，噪音极底。
Audio watermarking that modulates DC level shift according to watermark has wonderful low pass and noise resistance performance.
根据水印调整直流电平偏移的音频水印算法具有很好的低通和抗噪性能。
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