explosion-proof variable frequency variable speed
function of complex variable complex variable
stator variable voltage variable speed
variable diameter and variable pitch
Variable Frequency Variable Speed
variable frequency variable speed system
Variable Voltage Variable Frequency
categorical data
计数资料
分类资料
属性数据
类别资料
分类数据
字符型数据
范畴类型数据
分类型数据
分类属性数据
类属特征
categorical precipitation forecast
Categorical repeated measurement data
Categorical repeated measurement datas
Ordered categorical data
treatment based on categorical identification
Scale of ordered categorical ratings