aging crack

基本解释

In a circuit, check key check whether the insulation wiring occurs, aging, soften crack damage.
在檢查電路時，應重點檢查電線的絕緣層是否發生軟化、老化、裂損。
Aging, damage and crack are detected out in many bridges for the reasons of design, construction, management, natural disasters and so on.
由於設計、施工、琯理、環境腐蝕、自然災害等原因，目前已有不少橋梁發生老化、破損、裂縫等現象。
At present, some bridges appear aging, damage and crack for some reasons, such as design, construction, management, natural disasters and so on.
由於設計、施工、琯理、環境腐蝕、自然災害等原因，目前已有不少橋梁發生老化、破損、裂縫等現象。

Then in 1991 murders gradually declined, a circumstance police attributed to an aging crack population.
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