Radon concentrations can vary between adjacent homes, and can vary within a home from day-to-day and from hour-to-hour.
邻近房屋中的氡浓度可有差异,而且在一座房屋中每天及每小时都可有所不同。
2
Measurements used in a benchmarking environment do not necessarily apply to a production environment, where the workload can change, not only day-to-day and hour-to-hour, but minute-to-minute.