Other common causes include exposure to excessive noise, head and ear injury, ageing and the use of ototoxic drugs.

其他常见病因包括接触过量的噪音、头部和耳朵受伤、衰老和服用耳毒性药物。

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OBJECTIVE:To study hearing injury and damage of workers under noisy condition in Xi'an Aero-Engine (XAE) so as to provide scientific foundation for controlling operation noise.

目的：了解西航公司噪声作业工人听力损伤及损失情况，为噪声作业治理提供科学依据。

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Objective: to study the effects of otologic drill noise on functions and morphology of the inner ears and investigate into the injury mechanism to the inner ears of guinea pigs.

目的：观察耳科电钻噪声对豚鼠内耳功能和形态的影响，并探讨电钻噪声对内耳的损伤机制。

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