grab sample sampling 简单取样
grab sample sampling machine 抓样机
Sampling and sample preparation 取样和试样制备 ; 取样和样品制备 ; 取样和制样 ; 抽样和样品制备
Sampling & Sample collection 取样和样品收集
Sampling and sample preparation procedures 取样和样品制备程序 ; 取样和样品制备法 ; 取样和制样方法
Sample Random Sampling 简单随机抽样
sample method sampling method 取样法
Sampling distribution of sample mean 样本平均数的抽样分配 ; 样本平均值的抽样分布
And statistical controls are unlikely to compensate for a poor sampling strategy that does not yield a sample representative of the population to which we want to generalize.
一个差劲的采样策略并不能产生一个我们需要的代表总体的样本，而统计管理不太可能弥补这一点。
This is a truly unrepresentative sample, both in sampling strategy and its make up, and statistical controls cannot compensate for this.
事实上这是一个非典型的样本，不管是在抽样策略和它的组成上都是如此，而且统计管理也不能弥补这一缺陷。
However, if brewers wanted their Sake to be known as superior to most, they would submit a sample to the National Tax Office for sampling.
然而如果酒商们希望他们的清酒被认定为一级或特级的他们就得向国家税务调查局提交样品以供鉴定。
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