The system has following functions : showing indicator diagram , the mean value of maximum pressure , maximum pressure raise rate and rotating speed , the distribution of maximum pressure , maximum pressure raise rate and ignition advance angles , the speed fluctuation in cycle , speed fluctuation between cycle and ignition advance angles 本系统可以完成如下的工作：测量摩托车发动机的平均示功图；平均最大压力上升率；平均最高压力；平均转速；点火提前角；最大压力分布；最大压力上升率分布；点火提前角分布；循环内转速波动；循环间转速波动等。
We can get many physical parameters through indicator diagram acquired in the experiment . such as indicator work , mean indicated pressure , maximal pressure and corresponding crank angle , maximal rate of pressure rise and corresponding crank angle and mass fraction burned , heat release rate , etc . these physical parameters can analyze and show primary in - cylinder combustion process in engine 通过实测的示功图，经过计算整理可以获得诸如指示功、平均指示压力、最高燃烧压力及其对应曲轴转角、最高压力升高率及其对应曲轴转角、已燃质量分数、燃烧放热率等物理量，可供进一步分析和揭示发动机缸内燃烧过程。
There are concrete relationship between the population pressure and the transfer of agricultural surplus labor , and in different region the population pressure is different . the rural region is the agricultural population ' s concentrated region , so in this paper , we use some mathematic analysis to calculate the population pressure in the rural region of fujian province , based on the result , we divided the rural region of fujian province into four groups : the lower pressure region ; the midst pressure region ; the high pressure region and the highest pressure region . then choose a county in the high pressure region - - - - - - yunxiao county to study the transfer of agricultural surplus labor , then analysis the affection in the transfer and the obstructive factor , and put forward some suggestion to solve the transfer in the county 本论文利用ahp决策分析等数量分析方法对福建省乡村地区人口压力进行定量评估分级，把全省乡村地区按人口压力大小分为四个等级：低压力区、中等压力区、高压力区和最高压力，然后就高压力区的一个县? ?云霄县对农业剩余劳动力转移进行研究，通过对样本村的典型调查获得该县农业剩余劳动力转移的第一手资料，结合“五普”等资料对该县的农业剩余劳动力转移现状和特点进行较为微观的分析研究，探讨影响农业剩余劳动力转移的各种动力机制，并就农业剩余劳动力转移过程中存在的各种障碍因素进行分析，在此基础上，对云霄县农业剩余劳动力的提出几点对策和建议。
