例句與造句

1. At the same time , the age structure , time - specific life table , survivorship curve , fecundity schedule and leslie matrix were obtained through ana1ysing the demography and age struct ' ures of each subpopulation
   對種群年齡結(jié)構(gòu)研究中，編制了種群靜態(tài)生命表、生殖力表，利用建立的矩陣模型預(yù)測了種群數(shù)量的動態(tài)趨勢，并進(jìn)行了環(huán)境篩的分析，推斷了種群致危因素。
2. It's difficult to find time-specific life table in a sentence. 用time-specific life table造句挺難的