Methods determining exploration engineering interval include geological statistic method, SDmethod and empirical method.
确定矿产勘查工程间距的方法主要有地质统计学法、SD法和经验法。
2
Use Semantic Differential method (SDmethod) to analysis electric bicycle design characteristics, extract the modelling elements of electric bicycle's appereance.
应用意象尺度法（即SD法）对现有电动自行车造型特点进行了分析，提取了电动自行车的造型元素。
3
SDmethod, one of three reserves calculation methods like geometry, Krige and SD methods in China, is a new mineral resources reserves calculation and examination method.