| 单词 | compression stroke |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔compression ratio〕In an internal combustion engine, the ratio of the volume between the piston and cylinder head before and after a compression stroke.压缩比：内燃机中，在压缩行程前后活塞到汽缸盖之间的容量比美国传统〔diesel engine〕An internal-combustion engine that uses the heat of highly compressed air to ignite a spray of fuel introduced after the start of the compression stroke.狄赛尔内燃机：内燃机工作原理为压缩冲程开始后，使用高压压缩空气产生的热量点燃喷入的雾化燃料美国传统 |
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