建立详细的总结，包括措施、材料、方式和人员。确定要测量的参数、可能值的范围和所需的分辨率。提供一个抽样方案，详细说明抽样的方式和时间。选择样本大小。分配角色和职责。 Establishing a detailed summary including measures, on which material, in what manner, and by whom. Identify the parameters to be measured, the range of possible values, and the required resolution. Provide a sampling scheme that details how and when samples will be taken. Select sample sizes. Assign roles and responsibilities.