- 第二节
- dì èr jié2. Abschnitt (u.E.)
Sino-Deutsch Wörterbuch. 2013.
第二节
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Magic circle (mathematics) — Yang Hui s Magic Circle Magic circles were invented by the Song Dynasty (960–1279) Chinese mathematician Yang Hui (c. 1238–1298). It is the arrangement of natural numbers on circles where the sum of the numbers on each circle and the sum of… … Wikipedia
