When some defects are introduced into the periodic photonic crystal, a number of defect modes appear in the stop band.

当在周期性光子晶体中引入多个缺陷时，将在截止带中形成多个缺陷模。

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But the number of condos was scaled back as the economy cooled and because one of the towers was halted by a construction defect.

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For example, with a large number of financial intermediaries it seems unlikely that they could nudge themselves into tacit risk collusion because the incentive to defect is would be strong unless you were sure that enough firms had already tacitly colluded that they could trip the slaughter rule themselves.

FORBES: Inverse Moral Hazard: A Slaughter Rule For Finance