Age structure is a foundational base to study the population dynamics.
年龄结构是研究种群动态的重要基础。
Base on Service, Reform Population Plan Management System on Basic Unit
立足服务 改革基层人口计划管理机制
None of these groups ever developed a significant population base in Marshalltown.
这些群体在马歇尔敦人口中的比例始终有限。
The Territory was turned into a military base and the Spanish population was expelled.
英国把领土变成一个军事基地，并驱逐西班牙居民。
A Prediction System for Population Dynamics of Cotton Pink Bollworm Based on Knowledge Base
一个基于知识库的棉红铃虫种群动态预测系统
THE ESTABLISHMENT OF NATURAL POPULATION BASE OF STETHORUS SPECIES AND THEIR COLONIZIG ANG RELEASING
食螨瓢虫自然种群基地的建立与移殖释放
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