Combining the cepstrum method could identify the characteristic frequency availably. 結合倒頻譜方法可以有效地識別故障特征頻率。
In a similar way,radiant energy has a characteristic frequency and length associated with it. 同樣，輻射能有其特性頻率和相應的波長(cháng)。
Without changing the period size, the frequency bandgap is varied when the length of the stretching strip is adjusted. 在不改變周期的情況下，通過(guò)調整伸長(cháng)窄帶長(cháng)度可以改變帶隙特性頻率。
The natural frequency of specimen decreases as the crack length increases. 隨著(zhù)裂紋長(cháng)度的增加，試樣的固有頻率逐漸減小。
The swing is a pendulum with a single natural frequency depending on its length. 秋千是只有一個(gè)固有頻率的擺，此頻率決定于它的長(cháng)度。
