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menarche n.月經初期。

mencken

Menarche occurred at 13 years of age and the menstrual cycle remained within normal limits until the onset of menorrhagia 月經于13歲開始,一直到發生月經過多癥以前,經期正常。

Breast cancer is more common among women who had early menarche and late menopause . age at birth of first child 年紀很輕便開始有月經及年紀很大才停經的婦女。

Women who have early menarche and late menopause are also at higher risk 同時,年紀較輕時開始有月經及年紀較大才停經的婦女也有較大機會患病。

Research on menarche and first spermatorrhea of students in guangdong province 廣東省中小學生月經初潮與首次遺精年齡現狀及趨勢分析

A case - control study on psychological and social factors of urban girls with early menarche 月經初潮早發與社會心理因素關系

The relationship between bone development , menarche and height spurt among male adolescents 月經初潮與身高突增關系研究