efficiency是什么意思_efficiency怎么读_中英文释义(含例句用法)

efficiency (n.): 1590s, "power to accomplish something," from Latin efficientia "efficient power; efficiency; influence" (from efficientem; see efficient) + -cy. In mechanics, "ratio of useful work done to energy expended," from 1858. Attested from 1952 as short for efficiency apartment (itself from 1920).

词态变化

复数 efficiencies;

权威造句

1. The spa is the last word in luxury and efficiency.: 这家矿泉疗养浴场极尽奢华，功效极高。

2. Revenues from "green taxes" could then be channelled back into energy efficiency.: 从“绿色税收”得来的收入便可回过头来用于提高能效。

3. It was achieved with minimum fuss and maximum efficiency.: 事情事半功倍地完成了。

4. It doesn"t take much to improve the energy efficiency of your home.: 改善家庭能耗并非难事。

5. Defrost the fridge regularly so that it works at maximum efficiency.: 定期给冰箱除霜，以便它能发挥其最高效率。

近反义词

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

相似短语

with efficiency phr. 有效地；效率高地

average efficiency 平均效率

beam efficiency 波束效率

circumferential efficiency 周边效率

collision efficiency 碰撞率

column efficiency 柱效率

commercial efficiency 经济效率，经济效率

burner efficiency 燃烧室效率

capture efficiency 俘获效率

cardiac efficiency 心效率

单词分析

暂无,等待补充.

记忆方法

1. ef- "out" + fic- => fici- => effici-. 在这里取 out 的引申义：完成、结束(finish, end)之意。
2. meaning: 事情做完了，事情做结束了. => work out, accomplish.
3. => 引申为：事情做完、做结束后的效果。
4. effici- + -ent. => 有效的，有效果的，生效的。=> 高效的，效率高的，有本事的。
5. efficient => efficiency (efficient + -cy).

efficiency是什么意思，efficiency怎么读

efficiency基本信息

英英释义

中英词源