Considering that the surface of the magnetic pole is an ideal magnetic wall, by means of mirror method, the effect of outer magnetic pole on resonator impedance is analyzed quantitatively. The...

视磁极面为理想磁壁，应用镜象法，定量分析了外磁铁极头对谐振子阻抗的影响。

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A magnetic holder screwed to the wall is a practical way of keeping knives always within reach and isolated from other objects that could dull and dent the blades by knocking against them.

在墙上钉几个磁性支架来存放刀具是个不错的方法，既方便取用，又能把刀具跟其他物品分开，免得磕磕碰碰地弄钝弄花了刀刃。

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Unusual wall clock made out of recycled magnetic tape reel.

用回收的磁带卷做成的与众不同的挂钟。

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There are many kinds of work. There's electrical work, take the motor, you plug it into the wall, electricity makes the fan go around, that's electrical work. There's magnetic work.

我们复习一下大一,学过的功的概念：,物体在力的作用下，运动了一段距离。

麻省理工公开课 - 热力学与动力学课程节选

The space has charcoal-and-white wallpaper, a magnetic wall, a custom sectional and a long desk with computers for Jake and his 8-year-old sister.

WSJ: The New Luxury Kids' Rooms��WSJ Mansion