sample area 样地 ; 样区

small area sample survey 小区域抽样调查

area cluster sample 区域聚类样本

area probability sample 区域机率样本

sample area survey 样地调查

Permanent sample area 永久标本地

Sample preparation area 标品制备区 ; 样本准备区

optimal sample area 最优监测样区

typical sample area 典型样区