词汇	hundred rs place
释义	hundred rs place 百位
随便看	stratified random sampling surveys stratified randon sampling stratified rate stratified ratio estimate stratified ratio or rgeression estimates stratified reconstruction stratified regression estimate stratified regular space stratified relief stratified reservoir stratified rock stratified rock mass stratified rock masses stratified rocks stratified rock sample stratified rock slope stratified roof stratified sample stratified samples stratified sampling stratified sampling for proportions stratified sampling method stratified sampling of water stratified samplings stratified sampling technique