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But, the class was still as noice as a bees 'nest.
可是教室里仍然像个蜂窝一样吵闹。
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Be careful if there is any uncommon noice when the system running.
注意系统工作时有无异常响声。
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Both the method and the muffler described have good effects in noice reduction.
本文介绍的降低噪声方法及采用的消声器对降低噪声具有良好的效果。
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Flange member, noice silencer, tube end closure or connection device, and forming method and device.
法兰部件,消声器,管端闭锁或联结装置及其形成方法和装置。
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Their control precision, reliability and the noice resistance are raised greatly by using microcomputer.
由于采用了微机控制方法,大大提高了控制精度、可靠性和抗干扰能力。