The lower limit of temperature at which this occurs is known as the softening point or critical temperature.
呈现这一性质的温度下限称为软化点或临界温度。
The onset of lower back rounding defines a lower limit for safe squatting when heavy weights are used, and you should stop above this point.
负重时，当重的压重被用，而且你应该在上面这点停止的时候，比较低的后面圆化的攻击为保险箱蹲下定义一个较低的界限。
The conflicting problem of flash point and lower explosive limit as a criterion of hazard is studied in this paper.
文章就闪点与爆炸下限作为危险性判据相抵触的问题进行了探讨。
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