| 单词 | flashlight beam |
| 释义 | flashlight beam He would sweep the flashlight beam over the erected two-by-four studs and see the light travel between them, faintly spread against the night sky. Globe and Mail Previous radar systems used parabolic reflectors or similar systems to produce a narrow beam of radio energy rather like a flashlight beam. Retrieved from Wikipedia CC BY-SA 3.0 Flashlight beams act as a reticle. Retrieved from Wikipedia CC BY-SA 3.0 |
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