Abstract： In many power electronic applications ferrite cores of magnetic compon ents are biased with a DC or low-frequency premagnetization.

摘 要： 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。

Abstract A method is suggested to determine the absolute configuration of ent kaurene diterpenoids by analysing the circular dichroism spectral data of 13 hydroxy ent kaurenoids.

摘要通过系列13羟基对映贝壳杉烯二萜的园二色散光谱的数据分析，提出一种确定对映贝壳杉烯二萜绝对构型的方法。

Hydraulic classification is a effective way of controlling grain size and compon ent in production of quartzy grain.Hydraulic classification has high requiremen t to stability of feed.

水力分级是石英砂生产中控制粒度和成分的有效手段,对给料的稳定性要求较高。

Sore throats, backaches, headaches and bronchitis do not need to be treated by a separate ENT, orthopedist, neurologist and pulmonologist, unless the internist fails to make the symptoms better.

喉咙痛，背痛，头痛和支气管炎不需要单独去耳鼻喉科，整形外科，神经科和肺内科治疗，除非内科没有使症状好转。

When WU Z e-tian had Sainted Pricess Temple built on the hill of Goushang, the graves of the anci ent dead were discovered.She instructed to reinter the graves to the other plac e.

武则天在缑山修建升仙太子庙时发现古人的墓葬群，并令重新改葬。

Most of the birds that have ent the brief summer on the tundra now disa ear, leaving only the golden eagle, the gyrfalcon, the ptarmigan, and the owy owl to brave the sunle northern winter.

在苔原度过短暂夏天的大部分鸟类现已消失，只剩下金鹰、白隼、松鸡和雪白色的猫头鹰来迎接这没有太阳的北极之冬。