four-stroke engine

Từ điển Oxford Learners Wordfinder Dictionary

noun

an internal-combustion engine in which an explosive mixture is drawn into the cylinder on the first stroke and is compressed and ignited on the second stroke;
work is done on the third stroke and the products of combustion are exhausted on the fourth stroke
• Syn:
four-stroke internal-combustion engine
• Hypernyms:
internal-combustion engine, ICE