They result in severe cracking which is always ugly .
这会导致构件严重开裂，开裂总会有碍观瞻。
The most common and severe defect is the bridge cracking problem, which has seriously affected the normal usage of Bridges and become the urgent problem in the engineering field.
其中最为普遍和严重的便是桥梁裂缝问题，已经严重影响了桥梁的正常使用，成为工程界亟待解决的问题。
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