Swenson’s glider was an exquisite instrument for detecting turbulence. A jumbo jet can weigh upward of half a million pounds and fly more than five hundred miles an hour. It charges through the air like an ocean liner, barely registering most winds. This glider wasn’t much heavier than a Harley and it was moving about as fast—fifty to seventy miles an hour. It felt every bump. Small aircraft account for many of the injuries caused by turbulence and, essentially, all of the deaths—about forty a year. They fly at the mercy of the wind.
In Zaman's case, he and his colleagues found a way of 3D-printing material divided into chunky, square-shaped tiles. The angles of the sides of those tiles, and the precise nature of the cuts that separate them mean that, when squeezed together, they pop up into a desired 3D shape. It could be a chair, a tent-like structure, or a curved container of some kind, for instance.
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“注意温度，控制速度！”同样在工地上过了3个春节，现场工程师陆冠臻和团队正进行混凝土浇筑等工作。“期盼运河早日通航。”陆冠臻想着，等马道枢纽通航后带女儿来这看看，告诉她“这是爸爸曾经奋斗过的地方”。