在我们绘制出版的五色700×1000毫米水蒸汽焓熵图上,等k线与等a线的斜率、曲率与间距都平滑变化。这表明我们的计算精度达到先进的水平,给出比Grigull等好的结果.本文对Bach估计的鞍点参量加以修正补充,还提出关于Schlnidt绘制的等k线的若干问题的商榷. The slope, curvature, and spacing of the k-and iso-a lines change smoothly over the five-color 700 × 1000 mm water vapor enthalpy entropy plot we plotted. This shows that our computational accuracy reaches the advanced level and gives better results than Grigull etc. In this paper, the saddle-point parameters of Bach’s estimation are modified and supplemented, and some questions about the k-line drawn by Schlnidt are also proposed.