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In the swing arm working range should not have obstacles.
在摆臂工作范围内不得有障碍物。
youdao
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Person can not enter the arm movement range when hoisting.
吊装作业时人员不得进入摆臂运动范围内。
youdao
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Person can not enter the arm movement range when hoisting.
吊装作业时人员不得进入摆臂运动范围内。
youdao