cumulative total exposure
total total knee replacement
allowable exposure time
exposure time
曝露时间
暴露时间
暴光时间
照射时间
闪现时间
曝光时间
积分时间
溶胀时间
接触年限
接尘工龄
呈现时间
permitted exposure time
summit time low tide time and flat time of electric usage
soil total nitrogen and total phosphorus
TN Total Nitrogen and TP Total Phosphorus
total acids and total esters
total nitrogen and total phosphorous
Total α and Total β Activities
actual time over standard time
corrected retention time corrected retention time