结合省内外连拱隧道所产生的裂缝展开讨论，对连拱隧道的裂缝进行了数值分析，针对原因提出合理建议，同时谈了几点体会。
The paper discussed the numerical analysis of multi-arch tunnel cracks, and proposed some advice for the cracks cause.
对于在穿梭机外部燃料罐发现裂缝已经展开了详尽调查。
Cracks discovered in the shuttle's external fuel tank have sparked a lengthy investigation.
本文主要围绕煤层气井压裂裂缝导流能力实验评价展开介绍。
An all-round introduction is given mainly on experimental evaluations on the conductivity of hydraulic fracture in CBM Wells.
针对AC层容易发生反射裂缝质量通病的情况，就如何减缓广园东路AC层反射裂缝的发生展开课题。
In connection with the situation that AC layer happens reflection crack easily, thus the author launch the subject of lightening the reflection crack of Guangyuandong road AC layer.
针对AC层容易发生反射裂缝质量通病的情况，就如何减缓广园东路AC层反射裂缝的发生展开课题。
In connection with the situation that AC layer happens reflection crack easily, thus the author launch the subject of lightening the reflection crack of Guangyuandong road AC layer.
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