lǜ bō
意思解释：（Filter wave）通过由线圈和电容器组成的装置分离不同频率的电磁振荡，仅利用所需的振频。这在无线电技术中应用广泛。
用一定的装置把不同频率的电磁振荡分离开，只让所需的频率通过。1955年1月《无线电》第1期:“检查时，可先将输出变压器初级线圈用起子暂行短路，应无任何声音，若仍有交流声，就一定是滤波段不佳，若短路后交流声立刻消减，显然是由…
Depart the electromagnetism oscillation of different frequency with particular device, the frequency that lets need only is passed. In January 1955 radio the 1st period: Does sunken Hu Qi protect graupel of Su of of the Ran on to urinate Qiong of Qiao of a legendary venomous insect breaks evade of discharge of Dang of glair of sip τ frowsty Hu to punish miscellaneous firewood of carboxyl of of Deng of of confused of the Kingdom of Wei of ξ Yi melt does end of ǘ of twinkling of shovel of joyous ㄊ of ostrich of Ba suffer from Qu of extensive of evade of bewildered stern
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