平层碰铁 leveling cam
固定碰铁 stationary cam
伸缩式碰铁 retiring cam ; retractable cam
巧记铁门碰醒铜母 Mo
因与铁路列车碰撞或被铁路车辆撞击造成火车或铁路车辆乘员的损伤 Occupant of railway train or railway vehicle injured in collision with or hit by rolling stock
在溜板一侧装有限位碰铁，与限位开关感应，实现机床的拉削与返回功能。
In one side of the slide carriage, there is limit cam, response to the limit switch, to realize the broaching and returning function of the machine tool.
分别采用铜、铁、钢和铝材料制成碰磨装置进行了实验，并分析了实验的结果。
With the rub settings which are made of copper, iron, steel and aluminum alloy respectively, rub and impact phenmena are practiced and analysed in experiment.
文章用幽默的笔调讽刺那些“头一碰枕头就入睡的人”。他说，这种人虽有“铁一般的意志”，却缺乏人情味。
In a humorous tone, he ironies those "as soon as my head touches the pillow," who lack human touch though with "iron wills."
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