简要介绍了直流钳型电流表、收音机和手机可用来粗测磁共振扫描间屏蔽效果。

DC clamp meter, portable radio and mobile phone can be used to estimate the shielding effect of MRI scanning room.

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提出一种改进方法，即在量化测量原理的基础上，利用细测与粗测相结合的方法来测量精密时间间隔。

This paper introduces a method of fine measurement combined with coarse measurement to measure precision time interval.

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粗集方法可直接处理歼击机的可测输出信号，不需要对象的数学模型和相关先验知识。

The proposed method dealt with measurable signal of the aircraft, mathematical model and no relevant transcendental knowledge was needed.

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