词汇	bag sampling
释义	bag sampling 袋式取样
随便看	concept of science development concept of scienctific development concept of scientific development concept of scientific education concept of scientific method concept of scientific talent concept of sculptuing concept of self concept of services concept of sex concept of sex and love concept of sexual love concept of shared space concept of similarity concept of social economy concept of social history concept of socialism concept of socialist law-governed society concept of social time concept of sojourn concept of space concept of space and time concept of space structure concept of space-time Concept of spatial database