（差动保护）
Better-than-average effect
差动咬入法
differential biting method
2K-H型差动轮系
2K-H differential gear trains
3级直线差动机构
three-level straight line differential mechanism
500 kV主变差动保护
differential protection far 500 kV main transforme
DFT差动保护
DFT differential protection
SEL-587比率差动
SEL-587 percentage restrained differential
被动差分吸收光谱
Passive differential optical absorption spectroscopy
被动差分吸收光谱法
Passive differential optical absorption spectroscopy
泵控差动缸
pump controlled differential cylinder
泵控差动液压缸
pump controlled hydraulic differential cylinder
比率差动
ratio differential
percentage differential
percentage differential protection
ratio differential protection
ratio differentialprotection
differential protection
differential relay
ratio-differential
比率差动保护
rate differential protection
ratio differential protection
percentage differential protection
differential protection