油管的Efficient Engineer这个频道真的很神。现在又在看第二遍。我这个年纪不可能从头学机械，建模我一开始也没准。我倒是选了木工连接件这种需要一定受力的开始玩3D打印。就记得一点就是应力集中问题。有一次我认为受力的方向不会有问题，就留了直角。结果果然裂了。这个频道非常简洁，百看不厌。

国产开源大模型迎来集群式突破，多款中国自研基础模型面向全球开放走出低成本高效率差异化技术路线 China’s open-source large models achieve collective breakthroughs. Multiple domestically-developed foundation models go global, pioneering an efficient and cost-effective technical path

武汉大学又又又造假，文章接收时间为2025年七月4号，但是技术突破发生在2025年春天。 满打满算也要七个月才能做完实验，侧面证明武大已经造出了时光机。 Hafnium oxide interface stabilization for efficient, photothermally stable perovskite solar cells

试了这个 Codex prompt，真的香！😂 直接复制到新聊天里用⬇️： “Look across my threads and projects and come up with five ways to simplify and work more efficiently with Codex. Use sub-agents.” 它会自己回顾你的所有记录，给你5个超实用的优化建议，还强制用 sub-agents。 我刚试完效率直接起飞，强烈安利！ 感谢@theaaron

中山古镇灯博会如火如荼进行中，巴基斯坦客商坦言，家族和中国做生意已经50多年。作为国际客商一站式采购目的地，古镇不仅灯饰款式新、品类全，更有完善的餐饮、住宿等配套，让全球客商吃得舒心、住得便利、采购高效。 The 35th China (Guzhen) International Lighting Fair is in full swing, and a Pakistani buyer said, his family have been doing business with China for over 50 years. As a one-stop sourcing destination for international buyers, Guzhen offers not only the latest lighting designs and an extensive product range, but also comprehensive amenities, including dining and accommodation. Here, global buyers can enjoy great food, comfortable stays, and an efficient sourcing experience. #中山# #灯博会# #CantonFair# #CantonFair2026# #LightingFair#

第140届广交会日前开幕，一批中山知名家电企业参展，集中推出智能化、节能化、场景化新产品，凭借硬核产品实力持续圈粉全球客商。 The 140th Canton Fair has recently opened, with a group of well-known home appliance enterprises from Zhongshan showcasing their latest products. Featuring smart, energy-efficient and scenario-based innovations, these exhibitors have continued to win over global buyers with their strong product strength. #广交会# #CantonFair2026# #中山# #zhongshan# #MadeinChina# #ChinaFactory# #ChinaManufacturer#