astragal

柯林斯词典

astragal /ˈæstrəɡəl/

• 1. N a small convex moulding, usually with a semicircular cross section 一种有半圆横截面的小凹面模型件 (Also called bead)

• 2. N a moulding having the form of a string of beads 一串玻璃粉状的模型件

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