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抽样调查方法
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抽样调查方法
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农学
抽样调查方法
释
sampling method for investigation
抽样调查方法
按随机原则从总体中抽取一部分单位作为样本进行考察,用以推算总体特征的方法。
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thermal efficiency, heat efficiency
thermal efficiency of energy-saving project in rural areas
thermal efficiency of furnaces in metallurgical industry
thermal efficiency of internal combustion engine
thermal elasticity method of determining residual stress
thermal electrical breakdown
thermal electric generation
thermal electromagnetic field theory
thermal electron
thermal electron emission
thermal emission
Thermal Emission Imaging System
thermal energy
thermal energy converter
thermal energy-density
thermal energy storage
thermal energy storage system of solar thermal power
thermal enthalpy
thermal environment of lauch vehicle
thermal environment of livestock
thermal equation of state
thermal equilibrium
thermal equilibrium condition
thermal equilibrium law
thermal equilibrium state
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