Aiming at actual instance that the frequency of electric network is waving, based on twin-T resistance-capacitance active-trap filter, a trap filter which can filter the power interference between 49.
针对电网频率波动的实际情况，基于双t型阻容有源陷波电路，设计了可以滤除频带在49。
People are dancing in the streets, wearing his face on their T-shirt, waving flags with his face on and saying "Our father has returned home."
人们在街道上载歌载舞，身穿印有亚里斯提头像的T恤衫，挥舞着印有亚里斯提头像的旗帜，高呼“我们的国父回国了。”
People are dancing in the streets, wearing his face on their T-shirt, waving flags with his face on and saying "Our father has returned home."
人们在街道上载歌载舞，身穿印有亚里斯提头像的T恤衫，挥舞着印有亚里斯提头像的旗帜，高呼“我们的国父回国了。”
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