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偶发事件 ǒufā shìjiàn
busin.	episodic events; fortuitous event; happenstance
econ.	contingency
oil	accident; contingence; contingent
tech.	a chance occurrence; incident
telecom.	accidental event
textile	chance event
偶发［机遇］事件
space	opportunity events

偶发事件: 10 phrases in 7 subjects

Aviation	1
Economy	1
Electronics	2
General	1
Management	1
Securities	1
Technology	3