And the relationship between the sample content, and the measurement accuracy requirement and characteristic value is found out.
找出了样本容量与测试精度要求及统计特征值的关系。
In the initial stage of using small-caliber ballistic gun, ballistic characteristic value being higher, the normal examination of products and the sample of standard projectiles are affected.
小口径弹道炮在使用初期，弹道特性值偏高，影响产品的验收和标准弹的鉴选。
Secondly, a new projection index based on dynamic cluster rule is constructed in the PPDC model, which would finish the sample clustering based on the projected characteristic value.
以投影寻踪理论为基础，利用动态聚类方法构建投影指标，建立了水资源评价的投影寻踪动态聚类模型。
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