工厂的技师们开发制造了一台卧式发动机。
The technicians of the factory developed and manufactured a horizontal engine .
小型单缸卧式发动机一阶往复惯性力整体平衡法的理论研究
Theoretical study of integral balancing of first-order reciprocal inertia of small-sized single-cylinder horizontal engine
卧式发动机