An opening in a data medium or device such as a card or magnetic core.

诸如卡片、磁芯等数据媒体或设备上的开孔.

Magnetic core and photo electronic sensors were respectively used to recognize coins.

投币识别系统采用磁芯和光电传感器识别金属硬币；

A series of experiments were designed to evaluate the saturation of the magnetic core.

通过调整磁芯伏秒数、磁芯复位状态和负载阻值等实验条件进行了一系列实验.

This is the electrical resistance per unit length and cross - sectional area of a magnetic core.

具有单位截面积和单位长度的磁性材料的电阻.

The magnetic core consists of imported oriental crystal laminations with a very low loss factor.

该磁芯由东方进口的水晶片与非常低的损耗因子.

Especially in high-performance oxygen to soft magnet materials and magnetic core has a strong technical force.

尤其在高性能软磁铁氧提材料及磁芯领域有着强大的技术力量。

The high frequency transformer is designed by the AP method. The type of magnetic core, wire guage and the coiling method are computed by the AP method.

高频变压器设计部分通过面积乘积法算得变压器的磁芯型号、绕线规格和绕制方法。