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Every pulse beat with violence, and it seemed as though a bell were ringing in his ears.
他的脉搏剧烈地跳着，象是有一只钟在他的耳边大敲特敲。
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The generated monocycle pulse has acceptable symmetrical positive and negative portions and ringing …
产生的单脉冲的对称性和震铃水平都还在可以接受的范围内。
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