efficiency

英 [ɪ'fɪʃnsi] 美 [ɪ'fɪʃnsi]

• n. 效率；功率

双解释义

n. (名词)

1. [U]效率,效能

   result of work

详尽释义

n. 名词

1. 【物】效率
2. 效能，功效，实效
3. 功率
4. 提高功效的方法
5. 实力，能力
6. 【物】性能
7. 工作效率
8. 干练
9. 有效

英英释义

Noun:

1. the ratio of the output to the input of any system

2. skillfulness in avoiding wasted time and effort;

   "she did the work with great efficiency"
   

例句

用作名词 (n.)

1. We must improve our efficiency as soon as possible.
   我们必须尽快地提高工作效率。
2. Their labor efficiency is very high.
   他们的工作效率很高。
3. The two companies consolidated for greater efficiency.
   这两家公司已合并以提高效率。
4. This jet has a very high propulsive efficiency.
   该喷气机的喷射功率非常大。
5. Various PA linearization techniques have been adopted to improve linearity and power efficiency of wireless transmitters.
   于是多种不同功率放大器的线性化技术被采用来改善无线发射机的线性度及效率。

常见句型

用作名词 (n.)

1. Friction lowers the efficiency of a machine.
   摩擦减低机器的效率。

经典引文

• The penalty annexed to any law is an instance, not of its efficiency, but..of its failure.

  出自： R. Whately

• He conducted his course at the University with an efficiency which shone beside the amateurish efforts of his colleagues.

  出自： F. Tuohy

词汇搭配

用作名词 (n.)

动词+～

• achieve efficiency 取得功效
• add efficiency 增加功效
• promote efficiency 促进效率
• raise efficiency 提高效率

形容词+～

• fighting efficiency 战斗力
• high efficiency 高效率
• technical efficiency 技术效能

介词+～

• at efficiency 以…的效率
• in efficiency 在效率上
• work with great efficiency 工作效率很高

词源解说

• ☆ 1590年左右进入英语，直接源自拉丁语的efficere，意为效率，效果。

近反义词

【近义词】

• competence 能力
• efficacy 功效
• effectiveness 有效性
• productivity 生产率
• proficiency 熟练
• facility 设备
• technique 技术
• ability 能力
• understanding 理解

【反义词】

• inefficiency 无效率