Analog fixed speed and digital variable speed.
模拟固定速度和数字式可变速。
Most of active headsets, which use fixed analog feedback controllers, are not able to maximize the noise reduction.
目前有源耳罩大都采用固定的模拟反馈控制器，不能够最大限度地消除低频噪声。
The main idea of this article is by through three methods including fixed-slippage-amount method, fixed-load method and analog method to test the slippage performance of pure silk fabrics.
本文通过用定滑移量法、定负荷法和模拟缝合法对真丝织物的纰裂性能进行测试。
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