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Quota Sampling
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Quota Sampling
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Quota Sampling
配额抽样
调查人员将调查总体按一定标志分类或分层,确定各类(层)单位的样本数额,在配额内任意抽选样本单元的抽样方法。又称定额抽样。
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technological gap theory
technological innovation
technological innovation and application of grassland ecological restoration and sustainable management in the headwaters region of three rivers
technological innovation efficiency
technological innovation of enterprise
technological innovation strategy
technological intermediary
technological know-how
technological leapfrogging
technological lock-in
technological opportunity
technological paradigm
technological pedagogical and content knowledge
technological physics
technological process of three- transformation,two-separation and reuse
technological reserve
technological risk
technological strategy
technological test for semiconductor process
technological transformation
technological type of ore
technologies for waste heat and pressure energy recovery
technology
technology acceptance model
technology acquisition
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