This article originally appeared on Engadget at https://www.engadget.com/science/space/the-astronaut-whose-illness-forced-an-early-return-from-the-iss-was-mike-fincke-163752239.html?src=rss
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Yes, some cordless vacuums have “smart” features like Wi-Fi and app connectivity. But before we get into those, let’s talk about the extra perks scattered among these devices. Some models, like the latest from Dyson, include particle sensors that show you how many different sized pieces of debris it’s sucking up in real time. Dyson’s, for example, is a piezo acoustic sensor that detects particle size and frequency and displays that information on the vac’s LCD screen. Tineco’s iLoop sensor is similar, controlling its vacuums’ automatic suction power adjustment and changing a circle on the display from red to blue as you fully clean an area.，推荐阅读新收录的资料获取更多信息
With the explosion of 3D printing, designing 3D objects has become an even more important problem. And it's a complicated one. We need to design complicated objects that precisely interface with each other. And often we don't want to just design a single object, but classes of objects, parameterized by variables. And we need to do this in collaboration.。业内人士推荐新收录的资料作为进阶阅读