| 1. | This is a 2 - stroke engine , although its efficiency is lower than a four - stroke engine , its specific efficiency ( it is lighter ) is higher , so it is often applied in some small engines , etc . motorcycle and electronic saw
这是一组二冲程的引擎，他的效率不如四冲程来的高，但是因为重量与功率比很高也就是体积轻巧，所以常常用在如机车、电锯等小引擎的应用上。 |
