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接通时间
auto.	time on
el.	engaging time
el.mach.	making time
hydroel.st.	turnon time
IT	make-time
oil	connecting time
space	connect time; turn-on time
tech.	time of setting up a call; turn on time
telecom.	closing time; dwell time; make time; on time
接通时间指通信
agric.	on time
接通持续，工作时间
auto.	on-duration
接通时间［期］
telecom.	on period
接通〔持续〕时间
gen.	on time
电器接通时间
auto.	make-time
接通起动时间
auto.	on-period
接通电流时间
met.	on-time

接通时间: 21 phrases in 8 subjects

Agriculture	1
Automobiles	4
Chemistry	1
Electronics	4
Information technology	1
Power system protection	2
Space	1
Technology	7