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.
光束能导致硬币、耳环、眼镜架这样的金属物体过热而烧伤皮肤。
The beam also superheats metal objects like COINS, earrings, or spectacle frames, which can then burn skin.
光穿过这些场产生衍射，发散如喷雾状的衍射光向前方传播，因此对物体产生了一个与光束传播方向相反的推动。
The spray of light scattered forward by these fields could push the object backward, against the movement of the beam itself.
应用推荐