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偶遇抽样
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偶遇抽样
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accidental sampling
偶遇抽样
研究者根据实际情况,为方便开展工作,选择偶然遇到的人作为调查对象,或者仅选择离得最近、最容易找到的人作为调查对象,又称便利抽样。
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Molecular Plant Breeding
molecular plating
molecular point group
molecular polarity
molecular polarizability
molecular potential energy curve
molecular potential energy surface
molecular precision
molecular probe
molecular proposition
molecular quantum mechanics
molecular ratio
molecular reaction dynamics
molecular rearrangement
molecular recognition
molecular reflection
molecular refraction
molecular regulation
molecular ribbon
molecular rotation
molecular Rydberg state
molecular scattering
molecular self assembly
molecular self-assembly
molecular semiconductor
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