overhead work

基本解释

The folding-jib overhead working truck researched in this thesis is designed for the complex setting and operating condition of our country's important project.
本文所研究的折臂式高空作业车是在特定环境下，为适应国家重大工程项目复杂安装与操作工况而研制的专用设备。
AC frequency conversion synchronous film feeding and collecting device is adopted . THE overhead large working table is provided to widen the visual field with high automation degree.
采用AC变频同放收膜装置，设有高架大平工作台，视野开阔，自动化程序高。
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When hand tools are being used overhead, those working or standing below should be notified.
在高空使用手工具作业时，要通知在下边干活的或站着的人。
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