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定时限继电器
el. fixed time-lag relay; independent time-lag relay
hydroel.st. definite time relay; specified time relay
PSP time relay; specified-time relay
tech. independent time lag relay; definite-time relay
定时限继 电 器
: 16 phrases in 6 subjects
Electronics5
Hydroelectric power stations1
Information technology1
Nautical1
Power system protection3
Technology5