Jisho

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現象
Wikipedia definition
1. JackknifingJackknifing means the folding of an articulated vehicle (such as one towing a trailer) such that it resembles the acute angle of a folding pocket knife. If a vehicle towing a trailer skids, the trailer can push it from behind until it spins round and faces backwards. This may be caused by equipment failure, improper braking, or adverse road conditions such as an icy road surface.
Read “Jackknifing” on English Wikipedia
Read “ジャックナイフ現象” on Japanese Wikipedia
Read “Jackknifing” on DBpedia

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