constants是什么意思？

constants

• n. <数>常数，常量( constant的名词复数 )，不变的事物；

例句

• Some well - known methods for optical constants measuring include ellipsometer method, transmission spectrum method and so on. 目前,测量薄膜光学特性的方法有偏振测量法 、 透射光谱分析法等.
• The rate constants of radical and electrophilic addition to alkenes are dominated by different factors. 烯烃的自由基加成和亲电加成速率受不同的因素控制.
• Another limitation is the lack of availability of accurate equilibrium constants. 平衡计算的另一局限性是缺乏准确的可利用的平衡常数.
• These should be four undetermined constants in the displacement function. 位移函数中应有四个未定常数.
• Two significant constants have been found in a number of research studies. 若干研究已经发现了两个重要常量。

柯林斯高阶英汉双解学习词典释义

• ADJ
  持续不断的;重复的;一直存在的
  You use constant to describe something that happens all the time or is always there.
  例句
  She suggests that women are under constant pressure to be abnormally thin... 她暗示说女性总是处在保持身材异常瘦削的压力之下。 Inflation is a constant threat... 通货膨胀始终是个威胁。
• ADJ-GRADED
  恒定的;不变的
  If an amount or level is constant, it stays the same over a particular period of time.
  例句
  The average speed of the winds remained constant. 平均风速保持稳定。
• N-COUNT
  恒定物;常数；常量；常项
  A constant is a thing or value that always stays the same.
  例句
  In the world of fashion it sometimes seems that the only constant is ceaseless change... 在时装界，有时似乎唯一永恒不变的东西就是不断的变化。 Two significant constants have been found in a number of research studies. 若干研究已经发现了两个重要常量。