您要查找的是不是：
- normal failure period 正常失效期
- The practice of precoating the stem with polymethylmethacrylate (PMMA) has been associated with a higher than normal failure rate with some stem designs and has largely been abandoned. 在柄上预涂聚甲基丙烯酸甲酯（PMMA）的做法比一些类型的柄具有更高的松动率，这种做法基本被陶汰了。
- The computer has a normal qwerty keyboard. 这台计算机有标准的英文键盘。
- The situation has returned to normal in the city. 这座城市的局势已恢复正常。
- Analysis and Solution to Non - normal Failure of Crust Breaken of PTM 电解多功能天车打壳机构非正常失效的分析及解决方案
- The normal return fare to New York is fifty-six. 去纽约的来回票标准价是56元。
- Everything is absolutely normal. 一切完全正常。
- This case is not amenable to the normal rules. 这件事经不起常规的检验。
- The doctor said the child's temperature was normal. 医生说孩子体温正常。
- A condition of normal body temperature. 正常体温体温正常的状况
- Normal firmness of a tissue or an organ. 健康状态某个组织或器官所具有的正常坚韧性
- Less than the normal ability to respond to stimuli. 敏感减轻对刺激反应能力低于正常水平
- The bus service have returned to normal after the strike. 罢工结束後公共汽车恢复了正常的运营。
- Loss or removal of normal pigmentation. 褪色丧失或转移正常的着色
- accidental failure period 偶发故障期
- She refused to conform to the normal social conventions. 她拒绝遵从正常的社会习俗。
- exhaustion failure period 耗损（劣化）故障期
- The disease shuts the boy off from most of the activities of normal children. 疾病使这个男孩不能参加正常孩子的大部分活动。
- wear-out failure period 耗损失效期间
- The rain raised the river two meters above normal. 雨水使得这条河水位超出标准两米。
