不同光束角度的探头可用于检测不同方向角度的平面缺陷。
Probes with different beam angles can be used to detect planar defects at varying angles of orientation.
投影光束角度可使用螺丝刀手动调节，可调节电压的设置能降低热点和冲刷的伤害。
The projecting beam angle can be manually adjusted using a screwdriver, and the adjustable power setting reduces hot spots and washouts.
不过仅利用一对光束并不能得到有用的图像，还需要从大约100个不同的角度让物体光束扫描目标。
A single pair of beams does not, however, produce a useful image. To do that requires scanning the object beam through the target about a hundred different ways.
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