natural increase [经] 自然增长 ; 自然增加 ; 人口自然增长
rate of natural increase 自然增长率 ; 自然增生率 ; 自然增加率
intrinsic rate of natural increase 内禀增长率 ; [生态] 内禀自然增长率 ; 内在自然增殖率
natural increase rate [经] 自然增长率 ; 自然增加率
natural increase of population 人口自然增长 ; 人口自然增加
crude rate of natural increase [统计] 粗自然增长率
natural rate of increase 自然增加率 ; 自然增长率 ; 种群自然增长率
natural population increase 人口自然增长率
Experts at the Census Bureau estimate that more than sixty percent of Hispanic growth was from "natural increase" rather than migration.
VOA: special.2011.06.13
An Iranian delegation, including Oil Minister Massoud Mir-Kazemi, met with Turkish counterparts in Ankara this week, to sign a deal to build a new natural gas pipeline and to increase gas sales to Turkey.
VOA: standard.2010.07.23
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