alternating U series交错级数
alternating harmonic series莱布尼兹级数;[数] 交错调和级数
alternating Lüroth series交错序列Lüroth
alternating current series motor交流串励电动机;交流串激电动机;交廉激电动机
single-phase alternating current series-excited motor单相交流串励电动机
alternating series test交错级数判别法;交错级数检验
bi-alternating series双交错级数的
twin alternating series双项交错级数
sum of alternating series交错级数的和