Birth Interval and Children's Compulsory Education: Evidence from Rural China 生育间隔与农村义务教育的实证分析
The Age of First Birth and the Birth Interval of Young Female Migrant and Population Control: A Survey of the Floating Population in Xiamen 论青年女性流动人口初育间隔与人口控制&来自厦门流动人口家庭问卷调查的启示
There is no cure for birth and death save to enjoy the interval. 生和死都无法治,只有享受两者之间的间隔。
The chronic toxicity of ammonia to the relative growth rate in length, developmental time before reproduction, young numbers at a birth, interval time between each production and the intrinsic rate of increase ( r m) of M. mongolica were also studied. 同时,以体长相对增长率、产幼前发育期、每胎产幼数、产幼间隔及内禀增长率(rm)为指标,观察了氨对蒙古裸腹氵蚤生长、生殖的影响。
Birth interval has negative effect on child mortality rate; 生育间隔越长,幼儿死亡率越低;
Methods The factors as position of the fetus, birth way, complications of pregnancy, interval of intraocular parturition, birth weight of newborn, which might infect perinatal stage infants, were observed and analyzed in 46 cases of twin pregnancy. 方法观察46例双胎妊娠的胎方位、分娩方式、妊娠并发症、胎儿娩出间隔时间、新生儿出生体重等,分析上述因素对围产儿预后的影响。
Birth spacing is the age interval among the children within one family. 生育间隔,是指在同一家庭中不同儿童之间的年龄间隔。