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指南,伸缩 以上为机器翻译结果，快速获取精准的人工翻译结果，建议选择有道人工翻译 - 1
The utility model discloses a telescopic boom guide device and a telescopic boom of a crane, and relates to the field of the telescopic crane. 本实用新型公开一种伸缩臂导向装置及起重机伸缩臂，它涉及伸缩臂起重机。 - 2
By adopting the technical scheme, the device has a simple structure, can keep the guide rails to be always unblocked, and further has no influence on movement of a front telescopic guide rail. 采用以上技术方案后，该物品传送接轨装置结构简单、可以保持导轨始终畅通，并且还不影响其前方的可伸缩导轨的移动。 - 3
The utility model relates to a color TV projection amplifier which is composed of a machine frame, guide rails, lenses, apertures, a telescopic camera obscura, a camera obscura interface, etc. 彩电投影放大器由机架、导轨、透镜、光圈、可伸缩暗箱、暗箱接口等组成。
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