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
Extraneous
外源
额
远
异物
外
附加的
无关系的
外来的
额外的
无关
体外的
冗
Extraneous DNA fragment
Extraneous Heat Remover
extraneous hydrocephalus