汽车维修中的诊断技术是在不解体的情况下发现隐蔽故障、预测未来的技术状况和准确判断维修时间的有效方法。

Diagnosis in motor vehicle maintenance serves the function of discovering latent troubles, predicting technical conditions and precisely judging the maintenance intervals without vehicle dismantling.

youdao

造成液压机床爬行故障的原因很复杂，液压爬行故障又具有很强的隐蔽性，所以一直是机床维修的一大难点。

For the causes that result in the crawling malfunction of hydraulic machine are very complicated and invisibility, so being always a difficulty of machine maintenance.

youdao

由于地铁齿轮传动装置安装隐蔽、结构复杂、难于拆卸，故障类型多而复杂，加之测试条件的限制，故障诊断难度相当大。

Due to concealment installation, complicated structure, difficult to remove, complex fault and limit test conditions, the fault diagnosis of gear transmission is extremely difficult.

youdao