About the supply voltage, frequency, capacity factor of the fan and motor, specification of coil pipe, kinds of humidifier, form and efficiency of air filter, caliber and direction of pipe and etc.

对风机及电动机的电源电压、频率、功率，盘管规格，加湿器种类，空气过滤器形式及效率，配管口径及方向等有要求时请注明；

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This article describes the structure, principle of operation and experimental study of a new filter medium filter element of spiral coil.

本文介绍了新型过滤介质——螺旋线圈过滤芯的结构、工作原理及实验研究。

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Wherein the splitter USES a passive LC bandpass filter, it can divide signals coupled by the receiving coil into two.

其中分路器采用无源lc带通滤波器，它能将接收线圈耦合到的信号一分为二。

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