When laser intensity reaches a certain value, chaos appears and makes DNA mutate.

当激光强度达到一定值时，出现了混沌，会激励DNA发生变异。

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When the pressure reaches a certain value, the resistance of composites basically has nothing to do with the annealing time.

压力达到一定值后，体系的电阻基本不受热处理时间的影响。

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The Securities and Exchange Commission considers security at an executive's residence or during personal travel a perquisite that should be disclosed if the value reaches a certain threshold.

根据证券交易委员会(SEC)的规定，用于首席执行长住宅或个人旅行期间的保安费用应被视为额外补贴，达到一定金额后应予披露。

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"Attackers wait until the price of Bitcoins reaches a certain value, sell, destabilize the exchange, wait for everybody to panic-sell their Bitcoins, wait for the price to drop to a certain amount, then stop the attack and start buying as much as they can, " according to the exchange.

WSJ: Bitcoin Virtual Currency Start Up Gain New Venture Backers