Sampling techniques and sample size requirements vary with the techniques used.
取样方法和取样多少的要求因所采用的测试方法而异。
Although the capacity of the sample size (300) meets the basic requirements to the social statistics, the study is slightly less than accurate.
容量为300的样本规模尽管满足了社会统计的基本要求，但在研究的精确上来说仍略显不足。
Note: in case of the special requirements, the sample size and notch-groove depth shall be executed according to the requirements of corresponding technical conditions or mutual agreements.
注：试样尺寸和刻槽深度如有特殊要求时，应按相应的技术条件或双方协议的规定执行。
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