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(单词翻译:双击或拖选)
It's tough to be a machine in the desert. Particles of dirty sands walk their way in to moving parts where they break turbine's motors pipes on other equipment.To avoid the costly1 warranty2, researches are taking lessons from a desert native, the yellow fat scorpion3. Scorpion protect their bodies with exo-skeletons in order to minimize rubbing from air-born sand. The pattern on this armor modify the way that air flow over the scorpion's back. The researches scan the scorpion's body and use the natural pattern in inspiration for a variety of surfaces. With the computer model to simulate the airflow over the digital surfaces and wind tunnel for testing the physical samples, the researches are trying to develop the best texture4 for avoiding sand damage. Their work is in the Material Science Journal Annual. Although all texture surfaces feel better than smooth ones, one type of pattern resist the erosion best. Small dews cut the 30 degree angle to direction of the airflow. The machine whose surfaces are engraved5 with this texture should fight off the erosion like the scorpion do, where smoother equipment comes to the sting of sand.
1 costly | |
adj.昂贵的,价值高的,豪华的 | |
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2 warranty | |
n.担保书,证书,保单 | |
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3 scorpion | |
n.蝎子,心黑的人,蝎子鞭 | |
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4 texture | |
n.(织物)质地;(材料)构造;结构;肌理 | |
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5 engraved | |
v.在(硬物)上雕刻(字,画等)( engrave的过去式和过去分词 );将某事物深深印在(记忆或头脑中) | |
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