The playback or recording heads of a magnetic tape recorder or player have been demagnetized heretofore with an electrical unit which plugged into a suitable 110-volt AC current source and had pole pieces which were passed closely adjacent and across the surface of these heads and then slowly withdrawn to allow the influence of the AC field to die away gradually.

淘寶上的買家都是專家亚洲黄色视频电影，都是測試了使用效果之后才給好評的芭访繠BW操操操。堪吃谔詫毺粤诉@么多東西亚洲日本天堂欧美精品，只要按時收到了東西国产一区黄视频，沒壞日韩网红美女主播自拍视频网站，沒爛，跟照片一樣精品久久久久中文字幕，就給好評了哦一区二区日韩免费播放！照你這么說，你在淘寶買個錄音機的是不是都得實際測試了所有指標跟出廠指標一致之后才給好評芭访懒砝嘧耘摹亚洲成熟熟女一级毛片？

When a power failure has occurred, the recording head is demagnetized with power in case of a power failure.

當電源故障已經發(fā)生時，用在電源故障情況下的電力去磁記錄磁頭男女激情免费网站。

The recording head is unloaded after the recording head has been demagnetized.

在記錄磁頭已經被去磁之后亚洲精品永久中文字幕，卸載記錄磁頭。

An 80/20 alloy of nickel and iron; easily magnetized and demagnetized.

鎳和鐵的合金国产女同调教精品视频，易于磁化和消磁好了AV四色综合无码久久下载。

Her flashing eyes are so magnetic that just a single glance makes all my bank cards in my pocket demagnetized.

她的眼光真正地很有磁性，只瞥了我一眼无码码一区精品品和亚洲洲，我身上的銀行卡就全部被消磁了怡红院最新地址！

In a open circuit,the ratio of length to diameter at least should be 4:1, if the ratio is too small, the magnet will be easily demagnetized.

較短的磁體在開路環(huán)境下工作，其磁性能將會十分不穩(wěn)定精品久久九九九久久久久国产，較容易退磁69视频在线免费看。

If two men of equal ability, one magnetized by a divine self-confidence , the other demagnetized by fear and doubt, are given similar tasks, one will succeed and the other will fail.

假設兩個人的個人能力不分伯仲，其中一個人被非凡的自信磁化A级毛片喷潮高清免费观看，另一個則被膽怯和疑惑消磁动漫无码av永久免费专区，給他們安排相同的一個任務，結果一個人成功一個人失敗3Dh色视频在线播放。

Keywords: Domain structure;Microstructure;Magnetic properties; Magnetizing and demagnetized mechanism; Nanocrystalline composite magnets

中文關鍵詞：疇結構亚洲天天综合网在线；顯微結構；磁性能免费国产a国产片高清网站；磁化與反磁化；納米復合永磁材料

Researchers from the University of York and Hull University in Yorkshire had 45 osteoarthritis sufferers over age 50 wear four types of bracelets (copper, a weak magnet, a stronger magnet and a demagnetized strip) for four weeks each.

來自英國約克郡約克大學與赫爾大學的研究人員香港日本韩国一级二级三级网站，讓45位年齡在50歲以上的骨關節(jié)炎患者佩戴了四種類型的手鐲（分別用銅精品人妻系列无码专区不卡、弱磁材料、磁力較強材料和去磁材料制成）成年人黄色视频欧美，每一種佩戴四個星期看黄片在线天堂在线。

The AlNiCo permanent magnetic material is easily demagnetized because of its rather low coercivity under the reverse magnetic field low coercivity or vibration or touching the iron product.

鋁鎳鈷永磁材料的矯頑力較低，故易受反向磁場沖擊免费黄a网站、振動及鐵器接觸等因素的作用而發(fā)生某種程度的退磁高清激情18性爱啊啊在线欧美日韩不卡。