Energy conversion efficiency (η) is the ratio between （ ）and （ ）.
举一反三
- It is a verified fact that the higher ____<br/>of a two-stroke engine, the higher _____. A: the engine efficiency…the<br/>stroke/bore ratio B: the stroke/bore ratio…the<br/>engine efficiency C: the bore / stroke ratio…the<br/>engine efficiency D: the engine efficiency…the<br/>bore / stroke ratio
- Volumetric efficiency is the ratio of
- The energy conversion can take place _______.
- The higher compression ratio gives a ______thermal efficiency
- Energy conversion, which means the transformation of different energy forms, constitute the basic process of our energy usage.