三角肌,人体肩部的三角形肌肉。
The deltoid muscle, a triangular muscle on the human shoulder.
三角韧带,人体踝部的三角形韧带。
The deltoid ligament, a triangular ligament on the human ankle.
筝形(两对等长边分别在一端相接的四边形)。
A kite (quadrilateral having two pairs of edges of equal length, the edges of each pair touching each other at one end).
三角摆线(有三个尖点的内摆线)。
A deltoid curve (hypocycloid with three cusps).
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