Whatever sampling percentage you choose, runstats allows you to sample rows (Bernoulli sampling) or pages (system sampling).

无论选择多大的抽样百分比，runstats允许对行(Bernoullisampling)或页面(system sampling)进行抽样。

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Using simple random and system sampling methods, we investigated 1205 disabled persons in Beijing.

本研究采取简单随机、等距抽样等方法在北京市抽取了1205名残疾人进行调查。

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Dust particle counter, dust particle multi-point inspection system, sampling device, environment comprehensive parameter monitor, FFU central controller, etc.

尘埃粒子计数器，尘埃粒子多点检测系统，浮游菌采样器，环境综合参数监测器，FFU中央控制器等。

youdao

Dust particle counter, dust particle multi-point inspection system, sampling device, environment comprehensive parameter monitor, FFU central controller, etc.

尘埃粒子计数器，尘埃粒子多点检测系统，浮游菌采样器，环境综合参数监测器，FFU中央控制器等。

youdao