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周期系
週期系
zhōuqīxì
1. periodic system
2. periodicity (chemistry)

Character Breakdown

周
zhōu
Zhou dynasty; circumference
HSK 3 8 丶
期
qī
a period of time; date, time; phase
HSK 1 12 丶
系
xì
system; line, link, connection
HSK 1 7 丶

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Category
Chinese