preceding impulse
之前的冲动
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Corrective waves accomplish only a partial retracement, or "correction," of the progress achieved by any preceding impulse wave.
调整波只能纠正前面推动波的一部分。
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An extended wave often travels 261.8% the distance covered by a preceding impulse wave.
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