10:54 Jan 23, 2009 |
English to Chinese translations [PRO] Science - Astronomy & Space | ||||
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| Glossary-building KudoZ This question was created by: This question will remain open until an answer receives the required level of agreement from peers. Submission is still possible. |
Summary of translations provided | ||||
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5 | 天平动 |
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5 | 天秤動/天平動 |
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天平动 Definition from wiki: 月球光学天平动 optical libration of the Moon 即几何天平动,又称视天平动,月球天平动的一种。“月球常以同一面对着地球”的说法只是一种不严格的、近似的说法。 Example sentence(s):
Explanation: 严格地说,这三种天平动都不是月球本身真正的摆动,只是由于观测者位置改变造成的。为了与物理原因所引起的月球天平动区别开来,把它们合称为光学天平动。 |
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天秤動/天平動 Definition from Wiki 百科全書 : 在天文學中,(libration,源自拉丁文,意思為「搖擺中的平衡」。) 天秤動是從衛星環繞的天體上觀察所見到的,真實或視覺上非常緩慢的振盪。長久以來都只用在月球相對於地球的視運動,並且選擇一個點來平衡與對比晃動的尺度。 月球天秤動共有四種形式區分:緯度天秤動、經度天秤動、周日天秤動和物理天秤動。有些天文年曆能查看到每月之月球天秤動數據。 Example sentence(s): |
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