本实用新型提供一种新型封闭式吊钩装置,用于起重运输业。
The utility model provides a novel closed hook, which is used for the hoisting industry and the transportation industry.
织布机的控制装置由硬打孔卡和吊钩组成。
The loom is controlled by a system of stiff punch cards and hooks.
吊钩是液压升降平台车的附加起重装置。
Hook is a hydraulic lifting platform car attached lifting device.
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