气象天气查询 实时显示全球天气,专业的气象预报,功能齐全并且预测的比较准确,无论你身处全世界的哪一个位置你都可以得到相对精准气象信息。Weather radar, wind and waves forecast for kiters, surfers, paragliders, pilots, sailors and anyone else. Worldwide animated weather map, with easy to use layers and precise spot forecast. METAR, TAF and NOTAMs for any airport in the World. SYNOP codes from weather stations and buoys. Forecast models ECMWF, GFS, NAM and NEMS
圆周率前一百万位 圆周率前1000000位完整版,3.1415926后面的数字Pi Day is celebrated on March 14th (3/14) around the world. Pi (Greek letter “π”) is the symbol used in mathematics to represent a constant — the ratio of the…