A test under controlled conditions that is made to demonstrate a known truth,examine the validity of a hypothesis,or determine the efficacy of something previously untried.

 
  • 实验,试验在受控条件下为演示一项已知真理、检验假说的正确性或确定以前未试用过的某物的效能而做的试验。
今日热词
目录 附录 查词历史