This one has exposed deep cracks in the state of California.

而这一次所暴露的正是加州内部的问题。

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This paper introduces an impact elastic-wave based NDT method suitable for detection of such deep cracks.

本文提出了一种基于冲击弹性波的无损检测技术（简称表面波法）。

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Long, sweeping flow lines are crossed in places by much shorter lines, which are deep cracks in the ice called crevasses.

在绵长蜿蜒的线条里有一些短得多的线，它们是一些很深的冰块的裂缝，称为冰隙。

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Deep cracks beneath the waterline led to parts of the 80-year-old harbour wall collapsing in 2012.

BBC: Weymouth harbour wall: Warning over repair noise

This time, deep cracks have appeared in the Iranian leadership as former colleagues battle it out for the future of the Islamic republic.

ECONOMIST: As Iran simmers what will become of the protest movement?

If prices were to go much lower, deep-seated supply side political cracks would become very visible, (very quickly) in places such as Russia, Venezuela, Iraq, Libya, Yemen, Sudan, Libya and Algeria.

FORBES: Oil Memo To President Obama: Go Easy On Iran