two stroke

基本解释

The vessel to be propelled by a single-acting two stroke supercharged cross head Diesel engine, acting to a fixed pitch propeller .
该船的主机为单作用，二冲程，带涡轮增压器的十字头柴油发动机，并且螺旋桨为定距桨。
The experimental results have shown that exhaust emissions from two stroke motorcycle with the catalytic converter and feeding valve for secondary air have been reduced obviously .
试验表明：安装催化转化器和二次空气供给阀后的二冲程摩托车的排放有了明显的下降。
In the meantime, The matching about catalytic converter with two stroke and four stroke motorcycle is discussed.
同时讨论了催化转化器与二冲程、四冲程摩托车匹配的问题。

There are two kinds of strokes. An ischemic stroke happens when a blood vessel in the brain gets blocked.
On the y axis here it's the percent of people with these two conditions who have cardiovascular disease--or stroke rather 5%--less than 5% and a little over 5% with the stroke as the outcome.
轴表示患有心血管疾病的人同时患有,或不患有代谢综合征的百分比,就中风来说,分别是小于5%和略大于5%
耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选
A study published in Stroke last year involved about two thousand people with an average age of sixty-two.

The BR500's four-stroke engine is five times cleaner than the standard two-stroke models.
NPR: L.A. Looks to Cut Smog with Leaf Blower Trade-In