digu

Before his death DiGu will material to assistant Kepler, and told him the material preparation.

临终前第谷将材料交给助手开普勒，并劝诫他按这些材料编制星表。

Danish astronomer with 30 years DiGu observation of the planet, precision accumulated extensive accurate and reliable information.

丹麦天文学家第谷用30年时间精密观察行星的位置，积累了大量精确可靠的资料。

Only one bird Digu open mind: to peck a river so long, too hard!

只有一只鸟心里嘀咕开了：要啄那么长的一条河道，太辛苦了！

Guangdong Jieyang Digu Hardware Industry Co. , Ltd.

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Danish astronomer DiGu do later than the same measurements GuoShouJing 300 years.

丹麦天文学家第谷所做的同类测量比郭守敬晚300年。