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- Two and Four Stroke Engines: Fast and Simple Answers. 两冲程发动机和四:快速简单的答案。
- Components of a typical, four stroke cycle, DOHC piston engine. 四冲程循环活塞发动机的典型构成。
- Air cooled, four stroke, single cylinder, SOHC, 2 valves per cylinder. 风冷，四冲程，单缸，单顶置凸轮轴，每缸2气门。
- The golfer lost four strokes trying to get the ball out of the sand trap. 那个高尔夫球手花了四杆去打那落入沙坑的球。
- Liquid cooled, four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. 液体冷却，四冲程，横向四缸，双顶置凸轮轴，4每汽缸阀门。
- Introduce the development trends of Chinese motorcycle industry,the feature and specification of four stroke motorcycle oil. 分析了中国摩托车工业的发展趋势,介绍了四冲程摩托车发动机油的特点和规格。"
- "Great Wall"brand four stroke motorcycle oil obtained JASO quality certificate,and specially formulated to meet the performance requirements of four stroke motorcycle engine. 长城"牌四冲程摩托车发动机油已获得JASO质量认证,能够满足四冲程摩托车发动机的特殊性能要求。
- M.Y.E.Selim, J.C.Dent and S.Das, “Application of CFDto the Maching of In-Cylinder Fuel Injection and Air Motion in a Four Stroke Gasoline Engine,” SAE Paper No. 971601. 戴良哲,“单缸引擎缸内流场边界条件建立以及三维数值模拟”,国立清华大学动力机械研究所硕士论文,1996。
- In the medley relay, all four strokes are swum by four different swimmers. 在混合泳接力中，所有四种泳姿由四个不同的游泳运动员来游。
- She can swim for four minutes without gathering breath. 她能在水里游4分钟而不用停下来休息。
- The four strokes in the four-stroke-cycle engine, in their proper order, are intake, compression, power, and exhaust. 四冲程循环发动机中，四个冲程的固定顺序是：进气、压缩、作功和排气。
- XUNJIE Four stroke motorcycle oil 迅捷四冲程摩托车
- If motor state whether two stroke or four stroke 如果是发动机说明是二冲程或四冲程
- And the four strokes should be in this first butterfly,secondly backstroke,then breaststroke,and finally freestyle. 这四种泳姿要按这样的顺序游: 首先是蝶泳，然后是仰泳，再后是蛙泳，最后是自由泳。
- Four Stroke, Water cooled and spark plug ignition 四冲程、水冷、火花塞点火
- RUNJIE Four stroke motorcycle oil 润捷四冲程摩托车
- An engine which needs four strokes t complete one cycle is four-stroke cycle engine or, for short, a four-cycle engine. 发动机完成一个工作循环，需要四个行程，就称为四冲程循环发动机，或者简称四冲程发动机。
- Phelps is one of the world's best in all four strokes: freestyle, backstroke, breaststroke, and butterfly. 菲尔普斯在自由泳、仰泳、蛙泳以及蝶泳四种姿势中都是世界泳坛领军人物之一。
- FEICHI Four stroke motorcycle oil 飞驰四冲程摩托车
- In individual event,competitors swim an equal distance of four strokes; the sequence is butterfly,backstroke,breaststroke,and free style. 个人混合泳比赛时，运动员按下列顺序从4种姿势游相同的距离：蝶泳、仰泳、蛙泳、自由泳。
