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Popularized in the 1940s, waxing is a floor-finishing technique in which clear or colored wax, made of a blend of solvents and synthetic and/or natural waxes like beeswax or carnauba, is applied ...

When you need to sign and scan a document or don't have a proper scanner ready, your iPhone will do just fine. David Lumb is a mobile reporter covering how on-the-go gadgets like phones ...

英国伦敦大学学院研究人员开发出一种新型手持扫描仪，可在几秒钟内生成高度详细的3D光声图像。这项技术为早期疾病诊断提供了可能，为光声图像在临床环境中大规模便捷使用铺平了道路。研究发表在最新一期《自然·生物医学工程》杂志上。 这种手持式 ...