描述了一种新的利用电涡流进行石墨球表面缺陷检测的在线无损检测方法。
A new method of on line nondestructive testing for the flaws on graphite spheres surface with electromagnetic eddy current is stated.
而且液晶也反映了表面流线，分离区内的涡流和管道流动的角效应。
Besides, it can also give understanding of the surface streamlines, vortices in separation region and the corner effect of duct flow.
介绍油管镦头表面裂纹涡流检测方法，包括探头的制作以及计算机控制过程和机械传动机构设计。
Eddy current detection of the surface cracks in the headings of brake tubes, including the making of testing probe, computer control and the design of mechanical driving mechanism is described.
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