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单词 Magnetic Sweeper
释义

Magnetic Sweeper

英语例句库

The magnetic sweepers offer basic "wipe clean" designs, one features a "quick release" cleaning feature.Easy to operate and easy to maintain, these powerful magnetic tools never need remagnetizing.

(产品照片) Magnetic floor sweepers are great for collecting nails, screws, staples and scrap steel from shop floors, walkways and driveways, and other areas where nuisance metals can collect.

中文百科

磁铁 Magnet

(重定向自Magnetic Sweeper)
由铝镍钴永磁合金制成的马蹄磁铁。这形状试图拉近两个磁极之间的距离,借以产生能够吸引沉重铁磁体的强烈磁场。
铁屑会沿着棒状磁铁产生的磁力线排列
利用安培的磁铁模型,所计算棒状磁铁的磁场
许多的铁氧体磁铁

磁铁是可以吸引铁并于其外产生磁场的物体。狭义的磁铁指磁铁矿石的制品,广义的磁铁指的是用途为产生磁场的物体或装置。磁铁作为磁偶极子,能够吸引铁磁性物质,例如铁、镍及钴等金属。磁极的判定是以细线悬挂一磁铁,指向北方的磁极称为指北极N极,指向南方的磁极为指南极S极。(如果将地球想成一大磁铁,则目前地球的地磁北极是S极,地磁南极则是N极。)磁铁异极则相吸,同极则排斥。指南极与指北极相吸,指南极与指南极相斥,指北极与指北极相斥。

磁铁分作永久磁铁与非永久磁铁。天然的永久磁铁又称为天然磁石,永久磁铁也可以由人工制造(最强的磁铁是钕磁铁)。非永久性磁铁只有在某些条件下会有磁性,通常是以电磁铁的形式产生,也就是利用电流来强化其磁场。

英语百科

Magnet 磁铁

(重定向自Magnetic Sweeper)
A
Iron filings that have oriented in the magnetic field produced by a bar magnet
Field of a cylindrical bar magnet calculated with Ampère's model
Hard disk drives record data on a thin magnetic coating

A magnet (from Greek μαγνήτις λίθος magnḗtis líthos, "Magnesian stone") is a material or object that produces a magnetic field. This magnetic field is invisible but is responsible for the most notable property of a magnet: a force that pulls on other ferromagnetic materials, such as iron, and attracts or repels other magnets.

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更新时间:2025/6/21 2:25:47