English translation for "天底点辐射线"
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- nadir radial line
- Similar Words：
- "天底, 最低点" English translation, "天底；最低点" English translation, "天底点" English translation, "天底点 天底, 天顶, 直下点" English translation, "天底点对点器" English translation, "天底点幅射线" English translation, "天底读数" English translation, "天底角" English translation, "天底距" English translation, "天底下" English translation
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