The preeminent mechanical state where no magnetic tension force exerts on either of the two concentric square coils carrying currents is described.

讨论平面内二同心方形线圈载流时一线圈不受磁张力的优良力学状态。

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The paper studied the tension control system for NC Filament Winding Machine with magnetic particle clutch as the tension actuator based on the tests.

文章在实验的基础上，对以磁粉离合器为执行元件的数控纤维缠绕机精密张力控制系统进行了深入的探讨与研究。

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This machine has many functions of photo - electricity auto tracking, deviation , magnetic powder brake and clutch to control tension, as well as auto, count and preset count etc.

该机具有光电自动跟踪、纠偏、磁粉制动器和离合器控制张力，自动计数和预置计数等功能。

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However with the introduction of lighter weight and more flexible plastic substrate magnetic tapes, combined with a vacuum column to control the tension that the magnetic tape experiences during use, the IBM 726 was a prototype of the modern digital tape recording system.

FORBES: Magnetic Tape Turns 60