Abstract: In many power electronic applications ferrite cores of magnetic compon ents are biased with a DC or low-frequency premagnetization.
摘
: 在电力电子技术中应用的铁氧体铁心磁性元件,其铁心中往往存在直流或低频交流预磁化的情况。
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An ENT doctor is trained to treat a wide range of conditions including ear infections, hearing loss, sinusitis, allergies, tonsillitis, laryngitis and cancers of the head and neck, as well as being experts of airway management.
耳鼻喉科医生接受过广泛训练,可以治疗包括耳部感染、听力损失、鼻窦炎、过敏、扁桃体炎、喉炎以及头颈癌等多种疾病,并且他
气道管理方面的专家。