[计] 反例

Any system capable of a free vibration without external force is a counter example, e.g. a wire in the piano. 任何一个无外力而能自由振动的系统就是一个反例，譬如钢琴中的一条钢丝。

With every example of hypocrisy that can be pointed to in the church, a counter example can be pointed out showing people living consistently with the teaching of Jesus Christ. 每一个有关教会而提出的伪善的例子，我们都可以找到一个相反的例子来表明在同等的事务上很多人还是始终如一的按照耶稣的教诲来生活的。

A Counter Example on Nonsquare Constants 关于非方常数问题的一个反例

Tang give some counter examples to show that Doror's algorithm is not optimal.S.M.Xiang and G.C.Tang apply an assignment problem to solve such a problem. 项思明和唐国春提出对这类问题在机器连续加工情形下的一种求解方法，即将排序问题化成指派问题。

The traditional definition of knowledge (JTB) is not sufficient and necessary condition, searching for the definition of knowledge has not stopped since Gettier proposed counter examples to prove it, but almost nome of the corrections are satisfactory. 传统的知识定义(JTB)不是知识的充分必要条件,自盖梯尔(Gettier)提出反例证明了这一点之后,对“知识”定义的探讨就一直没有停止过,但几乎所有的修正都不能令人满意。