Classification of environmental conditions - part 3 : classification of groups of environmental parameters and their severities - section 3 : stationary use at weatherprotected locations ; amendment 1 环境条件的分类.第3部分:环境参数组的分类及其严酷程度分级.第3节:气候防护场所固定用.第1次修改
Vibration measurement is an important part of realizing the system status monitor and fault diagnose . this paper primarily describes how to design vibration measurement instrument based on worldfip fieldbus , how to realize control and parameter configuration to the instrument using fieldbus 振动测量是实现系统状态监测和故障诊断的一个重要组成部分，本文主要讲述了如何设计基于worldfip现场总线的振动测量仪表，如何利用现场总线对仪表进行控制和参数组态。
The optimization and simulations system of common machines can help the related science and technology personnel to get the principle parameter of the mechanical design quickly , and this system makes up the scarcity of traditional illustrated manual table method that design result is not enough accurate , and avoids the complications of c , fortran etc . software , it ease workload consumedly . this text combines the matlab software and mechanical design actively , it provides a new method and new tool for mechanical design , this system has an important realistic meaning to teaching process 常用机构优化设计及仿真系统的开发,使的相关科技人员在进行机械原理及机械设计教学和科研过程中,能够快速准确的根据相应的机构及其参数组在该系统中动态模拟机构的运动规律及形状尺寸等设计结果,弥补了在机械原理及机械设计的教学实践和科研中,使用传统的图解法进行机械设计结果不够准确和耗时耗力的缺点,以及利用c + + 、 fortran等高级语言编程进行解析法的运算中编程复杂的缺点,大大减轻工作量,提高了设计效率。
