boom inching operation 动臂微动操作
inching operation test 微动操作试验
maintained or inching operation 保持或电动操作
inching valve operation 微动阀操作
inching pedal operation 微动踏板操作
inching pedal operation test 微动踏板操作试验
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Safe design, double hands operation, with emergency buttons (the photoelectric protective device should be additionally mounted) and micro-inching adjusting buttons; 3.
安全设计周全，双手操作，设有紧急按钮（光电保护装置需另加装）及上下寸动调模按钮；
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