使用软件MATLAB6.5进行计算，并绘出凸轮行程、速度、加速度随时间的变化曲线。
The software MATLAB6.5 is used to calculate and draw the curves of travel, velocity and acceleration to time.
对于三缸低波动往复泵，理论上应使三个活塞在排出行程（吸入行程）中的速度之和为一常数，采用凸轮机构能达到这一目的。
Theoretically the sum of the velocities of the three pistons on the discharge stroke in a low-fluctuation triplex pump should be a constant, and this can be achieved by means of the cam mechanism.
提出了偏置式偏心圆凸轮机构从动件的行程、位移、速度、加速度的无量纲表达式，并对其进行分析。
The paper brings forward and analyzes the non-dimensional formulas of setover eccentric CAM from the aspects of the travel, displacement, speed and velocity of the moving parts.
在四行程循环时，每凸轮必须旋转打开一阀门。
Each CAM must revolve once during the four-stroke cycle to open a valve.
进气行程：凸轮轴打开进气阀，活塞在汽缸中向下运动，产生一段真空。
Intake stroke: the camshaft opens the intake valve and the piston moves down the cylinder. This creates vacuum and sucks in air and fuel into the combustion chamber above the piston.
进气行程：凸轮轴打开进气阀，活塞在汽缸中向下运动，产生一段真空。
Intake stroke: the camshaft opens the intake valve and the piston moves down the cylinder. This creates vacuum and sucks in air and fuel into the combustion chamber above the piston.
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