laser r rays 激光线
But all of the laser weapons, robots, sonic blasters and puke rays pictured here are real.
但这里提到的所有的雷射武器，机器人，音速爆破和催吐光线都是真实的。
By counting the number of such X-rays while scanning the frequency of the laser pulse, the team could make a very precise measurement of the photon energy required to drive the 2s-2p transition.
通过统计所发出X光的数量，然后对照激光脉冲的频率，测量小组能得出一个非常精确的测量值，从2s能级到2p能级跃迁所需的量子能量。
Portable devices with painless laser beams could soon replace X-rays as a non-invasive way to diagnose disease.
带有无痛激光束的便携设备可能将迅速取代X射线成为诊断疾病得力工具。
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