For greatest effectiveness respirators need to be worn before and during the entire exposure period.
最有效的呼吸防护需要在有暴露以前佩戴防护口罩。
skin exposure due to severe burns after the period.
皮肤由于经过暴晒严重灼伤时期。
The men exercised on a treadmill after each exposure and control period.
在每次控制时间的暴露之后，这些人在踏车上运动。
If exposure is for a sufficient period of time, it may produce significant hearing loss.
如果这种身在噪音的环境里达到一定时间，有可能会导致严重的听力丧失。
The significant influence factors of incubation period were exposure site and age.
狂犬病例暴露部位、年龄是影响潜伏期的重要因素。
Results An incubation period was found in eye injury after the exposure to mustard gas.
结果芥子气中毒眼部损伤具有潜伏期。
Results An incubation period was found in eye injury after the exposure to mustard gas.
结果芥子气中毒眼部损伤具有潜伏期。
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