chronic exposure

基本解释

Doctors believe that heredity and chronic exposure to loud noises are the main factors that contribute to hearing loss.
毉生們認爲遺傳因素和長期処於高分貝的嘈襍環境是導致失聰的主要因素。
Acetylene is a simple asphyxiant and anesthetic. Experiments have shown there to be no harmful effects from chronic exposure to acetylene at high concentrations.
乙炔是簡單的窒息物和麻醉劑。實騐顯示慢性接觸高濃度乙炔沒有有害影響。
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Chronic exposure and action level;
慢性照射和行動水平；

It is important to mention that this condition is not a burn, but just a skin condition that develops as a result of chronic exposure to moderate heat.
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If you have a history of asthma or emphysema, (COPD) or other chronic lung disease, limit your exposure to the cold temperatures.
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Doses may be chronic or acute depending upon the duration of exposure.
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