短語詞組短語sample -plot centre positioning 樣地中心定位Sample -plot survey 標準地調(diào)查sample plot method [林]樣地法sample plot index 樣地指數(shù);和樣地指數(shù)sample plot surveying 樣地調(diào)查fixed sample plot monitoring 樣地監(jiān)測purposive sample plot 標準地standard sample plot 標準樣地 返回 sample plot