n.调音；调节；转调；抑扬
The nodal modulation is a very significant feature of the tides. 交点调节是一个非常重要的潮汐特征。
Further, the role of modulation enters as another means of enhancing larger structural relations. 甚者，转调成为增强更大的结构关系的另一个工具。
n.解调制；反调制；去调幅
