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- Barker, C. R., and P. L. Tso, “Three Position Path Generation Synthesis of Planar Four Bar Mechanisms using SYNTRA,” ASME Mechanism Conference, 1988. 曾威达，滑块式肘节机构之合成与应用，硕士论文，国立清华大学动力机械工程学系，民国八十三年七月。
- The Equivalent Manipulator Workspace Method of Movability Analysis of Planar Four Bar Mechanism 用等效机械手工作空间的方法分析平面四杆机构的可动性
- All situation of SW-GBM have been discussed.The numerical experiment for planar four stations orientation program has been done, and get the conclusion that it can be used. 对SW-GBM法的各种情况进行了讨论，应用平面四点定位程序进行了试验，得出了可以应用于实际的结论。
- STABILITY ANALYSIS OF PLANAR FOUR BAR LINKAGES WITH CLEARANCES 考虑间隙的平面四杆机构稳定性分析
- It is used in the optimum design of four bar mechanism with given motion regulation and multi-constrains.The results show that the two algorithms are practical and the algorithm is more effective. 针对机构运动轨迹能够最佳逼近某一给定运动规律，且机构约束较多，采用改进蚁群算法对其进行优化计算。
- Evolution of four bar mechanisms and creative design of dynamic seal devices 四杆机构的演化与动密封结构的创新设计
- Using the vector method to analyse and solve kinematics of the crank-pilot bar mechanism,thus established the kinematical mathematic model of the crank-pilot bar mechanism. 为了求解曲柄导杆机构的运动学规律,运用矢量法进行了分析,建立了曲柄导杆机构的运动学数学模型。
- A planar region bounded by a circle. 圆形区，圆形空间被圆所包围的一个平面区域
- planar four- bar mechanisms 平面四杆机构
- It is clear to all of us that two plus two is four. 二加二等于四对我们大家都很清楚。
- He wove four plots together into a novel. 他把四条情节编成一部小说。
- We have tea at four o'clock in the afternoon. 我们在下午四点钟喝茶。
- The town boasts four swimming pools. 这座城镇以拥有四个游泳池而自豪。
- Our football team won by four goals to nil. 我们的足球队以四比零取胜。
- He lay back and hit the ball for four. 他向后弯身击中球，得了4分。
- I was clean broke in less than four days. 不到四天我就一个钱也没有了。
- I'll look out for you at about four. 我4点钟左右找你。
- He showed us four case studies of disturbed girls. 他给我们看了4位精神失常姑娘的病历。
- My house is four miles distance from the sea. 我家离海四英里。
- Our team beat them hollow by four clear goals. 我们队以净胜4分彻底击败了他们。
