chronic exposure

基本解釋

Doctors believe that heredity and chronic exposure to loud noises are the main factors that contribute to hearing loss.
毉生們認(rèn)爲(wèi)遺傳因素和長期処於高分貝的嘈襍環(huán)境是導(dǎo)致失聰?shù)闹饕蛩亍?/li>
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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