我国是多民族的大家庭,在长期的共同活动中,各民族同汉族一起创造了中华民族的科学文化。每个民族不论大小,都在科学技术方面对我们的祖国做出了贡献。早在南北朝时代,北朝有个叫斛兰的少数民族都匠,于后魏永兴四年(四一二年)就和汉族的太史令晁崇共同制成了有名的铁浑仪。在这铁浑仪上,装置了“十字水平”, Our country is a multi-ethnic family. In long-term joint activities, all ethnic groups together with the Han Chinese created the scientific culture of the Chinese nation. Every nation, large or small, has made its contribution to our motherland in science and technology. As early as the Northern and Southern Dynasties, there was a minor in the Northern Dynasties that was named Hulan. In the later four years of Wei Yongxing’s work (4112 years), he made a famous armored instrument with the Han Dynasty’s Tai Shiling Chao Chong. In this armillary sphere, the installation of the “cross level”