TEMPER : Process of re-heating hardened steel to a temperature below critical temperature followed by a desired rate of cooling;

回火：将已经淬硬的钢材再加热到低于临界点以下的某一温度，保温一定时间然后根据要求冷却到一定温度的工艺；

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In 1924, Einstein predicted the phenomenon of condensation for an ideal gas of neutral atoms obeyed Bose-statistics under the temperature below critical value.

1924年爱因斯坦预言了当温度低于临界温度时服从玻色统计的理想中性原子气体的凝聚现象。

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As snow accumulates on a steep slope, it reaches a critical point at which the slightest vibration will send it sliding into the valley below.

当雪在陡峭的斜坡上堆积时，它会达到一个临界点，在这个临界点上，最轻微的震动就会使它滑进下面的山谷。

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Italian bond yields have declined below the critical 7% level, after last week trading above that key level.

FORBES: Comex Gold Weaker Amid Firmer U.S. Dollar Index, Lower Crude Oil Prices

Italian bond yields have declined below the critical 7% level Friday, after trading above that level earlier this week.

FORBES: A.M. Kitco Metals Roundup: Comex Gold Higher on Bargain Hunting, Weaker U.S. Dollar Index

However, the Spanish 10-year bond yield, at 5.33%, is still below the critical 6% level that is deemed a danger point.

FORBES: A.M. Kitco Metals Roundup: Gold Firmer on Corrective Bounce, Chart Consolidation, Bargain Hunting