雨天測流,风大雨急,紙制的常用查算表、四随分析用的水位～流量等关系曲线,往往不能应用。为此,可用普通化学垫板(复写板)作为制作这种图表的材料。先用鈇笔在其上繪出所需的图表、写上字,并在铁笔刻画的图表、字痕上,涂一层与垫板原色不同的彩色鉛油,然后用抹布将其他处的鉛油擦去,防 Rainy day current measurement, the wind rains, paper checklist commonly used, four with the analysis of the water level ~ flow curve, often can not be applied. For this purpose, a conventional chemical pad (replica) can be used as the material for making such a chart. First use the pen to draw the desired chart on it, write the word, and in the stylus depicting the charts, letters marks, coated with a different layer of liner colored oil, and then with a rag to the rest of the lead Oil wipe off, anti