...向上升(压缩)为第一冲程(first stroke),遇到压缩的油气混合物后,就产生爆炸,推动活塞向下推,为第二冲程(second stroke),二冲程的名称就是这样来的。 由于二冲程发动机在结构上限制较低,在相同排气量的情况下,这种发动机可以拥有更高的转数上限。
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My second stroke also improved.
我的第二划水同时也进步了。
Manchester United owner Malcolm Glazer is back in hospital after suffering a second stroke.
曼联所有者马尔·柯姆·格拉泽在第二次中风之后回到了医院。
A few years earlier, after she had had a second stroke, she asked to go home to Hope to live in the nursing home downtown in what was the old Julia Chester Hospital.
几年前,她又中了一次风。之后她提出回到霍普镇,住进闹市区的老年疗养院,以前那是朱莉亚·切斯特医院。
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