“机车车辆工艺”1965年第5期发表的长辛店工厂陈发发明的由王益民同志总结写成的“蒸汽机车华氏阀动装置回动手把标示板刻线”的新求法,个人认为是一个好方法,是国外没有的方法,既节省了时间又保证了质量,值得推广,并应把它吸收到教材中去。但个人还有如下的一些意见,请考虑补充和修改:1.转动车轮求遮断点,是最可靠的方法,也是最准确的方法,但也是最费事的方法。如果说这种方法 “Locomotive and rolling stock technology ” published in 1965 fifth issue of Chang Xindian factory Chenfa invented by Comrade Wang Yimin summed up written “steam locomotive Fahrenheit valve actuator backhand board inscribed engraving ” new method, individual Think of it as a good method, a method not available abroad, saving time and ensuring quality, deserving to be promoted, and should be absorbed into teaching materials. However, there are some personal opinions as follows, please consider to add and modify: 1. Turning the wheel to seek the break off point, is the most reliable method, but also the most accurate way, but also the most expensive way. If you say this method