Wholesome supervisory orgnaization is opposite Xiamen city this eat of type of 27 concentration of whole town (drink) provide disinfection to serve orgnaization meal (drink) had samplingobservation.
厦门市卫生监督机构此次对全市27家集中式餐（饮）具消毒服务机构餐（饮）具进行了抽检。
2
Time sampling means that researchers choose various time intervals for their observation.
时间采样是指研究人员选择不同的时间间隔进行观察。
3
The advantage and feature of digital observation is the increasing in sampling rate.