简述了一种结构新颖、实用性强的海带丝切割机，该机通过机械切割代替手动切割，减轻了劳动强度，提高了生产效率。
Kelp cutter is novel in construction and practical. It replaces hand cutting by machine cutting. This cutter lightens intensity of Labour and raises Labour productivity.
研究结果表明，企业制度、研发项目投入强度、企业群体结构和产业集群对区域技术创新效率有显著影响。
The research results reveal that enterprise ownership system, intensity of R&D project input, firm colony structure, industrial firm clusters have significant relation ship with the efficiencies.
该焊接专机结构合理，利用PLC进行自动控制，降低了工人的劳动强度，提高了工作效率，改善了工件焊接质量。
This special welding machine has rational structure, USES PLC for automatic control, reduces labor intensity, and improves work efficiency and welding quality of workpiece.
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