阜阳教育学院王守春来信对本刊1981年第二期《一种简易的百分浓度溶液折算器》加以改进,现叙述如下: 一、折算器的构造 如图1所示,折算器主要由浓度尺、重量尺、支杆及滑板构成。其中重量尺能在浓度尺上竖直滑动且与浓度尺共面,滑板能沿支杆在两 A letter from Wang Yangchun of Fuyang Institute of Education wrote an improvement to the second issue of “A Simple Percent Concentration Solution Converter” in 1981. It is described as follows: First, the construction of the conversion device is shown in Figure 1. The conversion device is mainly composed of a concentration scale. , weight scales, poles and skateboards. The weight scale can slide vertically on the concentration scale and coplanar with the concentration scale. The skateboard can be along the support rod in two