critical point

critical-point的词性：
n.（名词）

1. Physics The temperature and pressure at which the liquid and gaseous phases of a pure stable substance become identical.Also called critical state
【物理学】 临界点：一个稳定纯物质的液态和气态能相互转换时的温度和压力也作 critical state

2. Mathematics
【数学】

3. A maximum, minimum, or point of inflection of a curve.
临界点：某条曲线的最大、最小或回折点

4. A point at which the derivative of a function is zero or infinite.
临界点：一个函数的导数等于零或无穷大时的一个点