玉井 (星官)
玉井是中国古代星官之一，属于二十八宿的西方七宿的参宿，含有4颗星，位于现代星座的波江座和猎户座。
清代编成的《仪象考成》和《仪象考成续编》星表，玉井增加了3星。
所含恒星及对应西方名称[1]
| 玉井一 | λ Eri |
| 玉井二 | ψ Eri |
| 玉井三 | β Eri |
| 玉井四 | τ Ori |
| 玉井增一 | 66 Eri |
| 玉井增二 | 68 Eri |
| 玉井增三 | HIP 23802 |
参考
^ 伊世同 《中西对照恒星图表》
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Does Ubuntu 18.04 supports wireless multifunctional keybord such as Logitech k400?
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I have Ubuntu 12.04 so far, but it has so many problems with wireless keyboards (2.4GHz) such as the "normal" keys do not work and special keys do or "normal" do and special do not. Yes, I tried 12.10 and I think the same. Guess I need to upgrade... So my question is: Does new Ubuntu (like 18.04, or something like Mint) support keyboards with a touchpad, like Logitech k400 (using 2.4GHz connection)? If Ubuntu 18.04 doesn't have this support, are there any other Debian distributions that do?
keyboard touchpad logitech wireless-keyboards
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