Utility S.I. engine

• 通用汽油机

Utility S.I. engine的用法和样例：

例句

1. Specializing in the production of motorcycles, the series product, the micro-car, mower, chain saw, and other kinds of engine piston rings.
   专业从事生产摩托车，通用汽油机，微型汽车，割草机，油锯等各式发动机的活塞环。