The scientists from MIT noticed how spiders catch their prey1 in the rain by secreting2 a sticky material containing a carbohydrate3 known as polysaccharides that absorb water from the surface of an insect almost instantaneously, leaving a small, dry patch the glue can then stick to.
来自麻省理工学院的科学家们注意到,蜘蛛在雨中捕捉猎物的方法是靠分泌一种含有带电多糖的粘性物质,这种物质几乎可以瞬间从昆虫表面吸收水分,留下一小块干燥的表面,从而黏着猎物。
The basic features of the squeeze casting were described. The squeeze casting machine should possess the ability of smooth mold filling with low flow speed and large discharge quantity and increasing the squeezing pressure instantaneously.
叙述了挤压铸造的基本特点,对液态挤压铸造机要求具备低流速大流量平稳充填铸型和瞬时增压的能力。
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