高等学校试用教材《弧焊电源》出版后,有些同志对该书中图3—37(即同体式弧焊变压器负载时磁通分布及矢量图)提出了问题。因为它既和1964年出版的高等学校试用教科书《熔化电焊设备》中讲的不一样,同时也与苏联那宾诺维奇编著的《电弧焊设备》一书中叙述的不同。对于这一问题,我认为主要是人们对正弦量的矢量表示法及正方向法则的 After the publication of “Arc Welding Power Supply”, a sample textbook for colleges and universities, some comrades raised questions about the magnetic flux distribution and vector diagram in Figure 3-37 in this book. Because it is different from what was said in the textbook “Fusion Welding Equipment” published in 1964 and also in the book “Arc Welding Equipment” edited by Obanović, the Soviet Union. For this problem, I think it is mainly people’s vector representation of the sine and the law of the positive direction