The braking characteristic of the brake system of rig drawworks is a basis of design and use of brake apparatus.

钻机绞车刹车系统的制动特性是合理设计和使用刹车装置的理论基础。

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If the arc generated during the make or brake of electrodes of spark-test apparatus was regarded as a non-linear resistance, non-explosion assessing intrinsic safety method can be established.

如果将火花试验装置的电极在闭合或断开时的放电电弧看作一个非线性电阻，则可以实现电路本质安全性能的计算机辅助分析方法。

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Disclosed are a reel brake device and a magnetic recording and reproducing apparatus having the same.

公开了一种磁带卷盘制动装置和具有该装置的磁记录和再现装置。

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