合ごう計けい特とく殊しゅ出しゅっ生しょう率りつ

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Meanings

total fertility rate; TFR

Demographic term for the average number of children a woman would have in her lifetime, based on current age-specific fertility rates.

出しゅっ生しょう率りつ
Birth rate; a more general term for the number of live births per 1,000 population in a given year. 合計特殊出生率 is a specific demographic measure.
人じん口こう置ち換かん水すい準じゅん
Replacement level; the fertility rate needed to keep the population stable without migration. Often compared with 合計特殊出生率.

Compound of 合計 (total), 特殊 (special), 出生 (birth), and 率 (rate). A direct translation of the English demographic term 'total fertility rate'.