Box section telescopic boom; Telescopic mechanism; Pinless boom; Single cylinder pin type;

箱型伸缩臂； 伸缩机构； 无销式； 单缸插销式；

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Also some important part is the bucket cylinder joint pin, the bushing, certainly must carry on the inspection to these place loose and tight.

还有一个重要的部分是铲斗油缸连接销、衬套，一定要对这些地方的松紧进行检查。

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The high speed drilling shaft and pin cylinder system work at the same reference axis to ensure high work precision and convent operation.

高速精密钻孔主轴和钉销气缸系同基准轴线上工作，能保证工作精度高，操作方便。

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The government may simply insist that 3D printer manufacturers install software that prevents printing of a hollow cylinder of a certain size, a firing pin, or a certain type of spring.

FORBES: Five Reasons Gunmakers Have Nothing To Fear From 3D Printed Guns