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Helgason's books Differential Geometry, Lie Groups, and Symmetric Spaces and Groups and Geometric Analysis, intermixed with new content created for the class.
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这份讲稿除了在关于拓扑群的某些细节以外都是自封的。 |
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Helical circular mixture ,fast and uniform stirring.
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螺旋循环搅拌使得原料混合更加均匀、快速。 |
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Helically wound multi-filar cables and braids now predominate.
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多股绞绕与编织在当代是占优势的。 |
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Helicase Any of a group of enzymes that catalyze the unwinding of double-stranded nucleic acids such as DNA, using energy from ATP.
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解螺旋酶（蜗牛酶）：一组可以催化象DNA这样双链核酸解螺旋的酶，由ATP提供能量。 |
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Helicopter crews who discover traffic jams while patrolling will send images back to the monitoring center.
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执行巡逻任务的直升机一旦发现交通堵塞现象,便立刻向交通监控中心报告. |
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Helicopter flying straight and level.
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先保持水平直线飞行。 |
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Helicopters and trucks rushed to retrieve Yang.
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直升机和卡车疾驶前去搜寻杨。 |
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Helicopters are now used in some cases to get people out of burning buildings.
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现在，人们有时还用直升机营救起火大楼中的被困人员。 |
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Helicopters can't fly; they're just so ugly the earth repels them.
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直升机不能飞的，只是它们太丑了，连地球也排斥它们。 |
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Helicopters can\'t fly; they\'re just so ugly the earth repels them.
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直升机其实是不能飞的，只是它们太丑了，连地球也排斥它们。 |
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Helicopters can\'t fly\; they\'re just so ugly the earth repels them.
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直升机是不可能飞的。但是它们实在太丑了，连地球也排斥它们，所以可以升空。 |
