C. Spare parts and fragmentary material validation by purchasing personnel with the warehouse keeper quantity and relevant data validation.
备件和零星材料的验证由采购人员同库房保管员进行数量和相关资料的验证。
2
It is only when the data of perception are very rich (not fragmentary) and correspond to reality (are not illusory) that they can be the basis for forming correct concepts and theories.
Then, three equivalent clustering algorithms are provided for the dataset with fragmentary samples, which decreases the influence of incomplete data on clustering.