如果产品是在非环境温度下使用的,合乎逻辑的应是在这些相同的工作条件下进行试验。然而,增高或减低室温试验不可避免地需要比较复杂和昂贵的仪器,并且作起试验来要费相当长的时间。从这方面来看,停放时间是必须考虑的,并且常常是影响试验的限制性因素。在质量控制试验中当然这是特别重要的,其中尤以时间和经费最为重要。如果采用的停放时间太短,则会使温度变化对材料的影响估计过低,而且试验结果的变异性会有增加的倾向。或者反过来,如果让停放时间过份延长,不汉会使试验更花钱,而且 If the product is used at non-ambient temperature, it is logical to test under these same operating conditions. However, increasing or decreasing room temperature tests inevitably requires more complicated and expensive instruments, and it takes a considerable amount of time to start the test. In this respect, parking time must be considered and often is a limiting factor in the test. Of course, this is of particular importance in quality control experiments, where time and money are most important. If the parking time used is too short, the effects of temperature changes on the material will be underestimated and the variability in test results tends to increase. Or, conversely, if you let your parking time go too far, it will cost you more money