3) fry mortality 鱼苗死亡率4) abalone larva death 鲍苗死亡5) the mortality rates of the pregnant and puerperant women and the infants 孕产妇和婴幼儿死亡率6) reduction of infant and child mortality 降低婴幼儿死亡率补充资料:幼苗 1.种子发芽后生长初期的幼小植物体。用以比喻儿童﹑新生事物...