“Drake Equation”的意思、由来-开放百科全书

词条	Drake Equation
释义	> Drake equation {{R from other capitalisation}}
随便看	Texas State Highway Loop 203 Texas State Highway Loop 207 Texas State Highway Loop 21 Texas State Highway Loop 216 Texas State Highway Loop 218 Texas State Highway Loop 23 Texas State Highway Loop 237 (1959-1991) Texas State Highway Loop 237 (pre-1951) Texas State Highway Loop 25 Texas State Highway Loop 260 Texas State Highway Loop 301 Texas State Highway Loop 302 Texas State Highway Loop 313 Texas State Highway Loop 318 Texas State Highway Loop 329 Texas State Highway Loop 34 Texas State Highway Loop 350 Texas State Highway Loop 36 Texas State Highway Loop 37 Texas State Highway Loop 374 Texas State Highway Loop 38 Texas State Highway Loop 382 Texas State Highway Loop 384 Texas State Highway Loop 390 Texas State Highway Loop 392

开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。