曲线尺是水利技术人员常用的工具之一,但市场上很少能买到,即使买到也容易开胶或断裂。这里介绍给同行们一个小窍门。取一段30厘米长的铝芯塑料皮电线,将一端弯成圆环(便于使用和防止滚动)。放到图纸上按曲线上的各点弯成相应形状,就可以用铅笔或 The ruler is one of the tools commonly used by water technicians, but it is rarely available on the market, and it is easy to open or break even if it is bought. Here is a small tip for your colleagues. Take a 30 cm long aluminum core plastic sheathed wire and bend one end into a ring (easy to use and prevent rolling). Put it on the drawing and bend it into a shape according to each point on the curve. You can use pencil or