单词 | fatigue fracture |
例句 | In May, Norway’s Accident Investigation Board concluded that “a fatigue fracture” in the main rotor gearbox caused the crash and excluded maintenance actions by the helicopter operator. Norway police close probe into 2016 fatal crash 2018-10-23T04:00:00Z Investigators found that a fatigue fracture had not been picked up during maintenance. Super Puma crash inquiry to begin 2014-01-06T00:31:38Z |
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