A two-stroke engine has no moving valves, and the spark plug fires each time the piston hits the top of its cycle.
二冲程发动机没有移动的阀，火花塞每次点火活塞到达循环顶端。
Primary electrical power is provided by two engine driven generators which supply three-phase, 115 volt 400 cycle alternating current.
主电力是由两个发动机驱动发电机供应三相，115伏400周期交流电。
If it needs only two strokes to complete a cycle, it is called a two-stroke cycle engine or, for short, a two-cycle engine.
如果发动机完成一个工作循环，只需要两个行程，就称为两冲程循环发动机，或者简称两冲程发动机。
Two internal irreversibility parameters, the heat engine cycle and the refrigerator cycle were introduced to characterize the irreversibility inside the cycle.
引入两个内不可逆性参数，分别用于描述热机循环的内不可逆性和制冷循环的内不可逆性。
Thus, a two-cycle engine fires twice as often as a four-cycle engine.
这样说来，两冲程发动机的点火次数是四冲程发动机的两倍。
In the two-cycle engine, the piston ACTS as a valve, clearing valve ports in the cylinder wall as it nears BDC.
在二行程发动机中，活塞起到阀门的作用，当活塞接近下止点时，使气缸壁上的进排气口打开。
The size, weight, and cost of the engine per horsepower are therefore less, and two-stroke-cycle engines are used in motorcycles and smaller machines (e. g. , lawnmowers and power rakes).
因此，每马力所要求的机器尺寸、重量和价格成本也就降低了，所以二冲程循环发动机多用于摩托车和小型机器（如割草机和动力耙）。
The invention relates to a combined cycle of a high-power diesel engine and a divided-flow two-level turbine engine with two pumps.
大功率柴油机与分流式两泵两级涡轮发动机联合循环。
The invention relates to a combined cycle of a high-power diesel engine and a divided-flow two-level turbine engine with one pump.
大功率柴油机与分流式一泵两级涡轮发动机联合循环。
The invention relates to a combined cycle of a high-power diesel engine and a divided-flow two-level turbine engine with one pump.
大功率柴油机与分流式一泵两级涡轮发动机联合循环。
应用推荐