Training objectives: the adoption of a systematic training to enable students master excavator safety procedures and construction methods of operation;
培训目标：通过系统化培训使学员熟练掌握挖掘机的安全操作规程及施工中的操作方法；
Nearby structures can interfere with operation of the excavator or the excavation can undermine adjacent structures and associated foundations.
挖掘机械和操作人员可能伤及在开挖区域内的、临近车辆的工人或破坏资产。
A microcomputer is used to control excavator model WS-005 on test be (?) ch for excavating operation according to the given trajectories and to collect various data in the excavating process.
在WS- 005挖掘机试验台上用微机控制挖掘机，使其按给定的挖掘轨迹挖掘，同时用微机采集挖掘过程各参数。
Qualitative analysis of the effect of fitting between pin and bushing of an excavator attachment on operation situation is conducted. Possible problems and factors exerting influences are pointed out.
对挖掘机工作装置轴与轴套的配合在使用状况中的影响进行定性的分析，提出可能出现的问题及影响因素。
Qualitative analysis of the effect of fitting between pin and bushing of an excavator attachment on operation situation is conducted. Possible problems and factors exerting influences are pointed out.
对挖掘机工作装置轴与轴套的配合在使用状况中的影响进行定性的分析，提出可能出现的问题及影响因素。
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