各类起重机共同的工作特点是作间歇性运动，即在一个工作循环中，进行取料、运移、卸载等动作的相应机构是交替工作的。
The work of the common characteristic is a sport in which a intermittent works cycles to take, it moves, unloading, the relevant agencies are to alternate work.
各类起重机共同的工作特点是作间歇性运动，即在一个工作循环中，进行取料、运移、卸载等动作的相应机构是交替工作的。
The work of the common characteristic is a sport in which a intermittent works cycles to take, it moves, unloading, the relevant agencies are to alternate work.
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