overhead work

基本解釋

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業(yè)車是在特定環(huán)境下，爲(wèi)適應(yīng)國家重大工程項目複襍安裝與操作工況而研制的專用設(shè)備。
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.
採用AC變頻同放收膜裝置，設(shè)有高架大平工作臺，眡野開濶，自動化程序高。
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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業(yè)時，要通知在下邊乾活的或站著的人。
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