treble-heading
simple past tense and past participle of unsnag
(physics) A pion generated by the action of light
simple past tense and past participle of chirm
(rail transport) The use of three locomotives at the front, or head, of a train.
列車の先頭に機関車を3台連結して牽引することで、重い貨物列車は急な勾配を失速せずに登ることができた。
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DiQt
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