... quadrant 象限扇形体舵扇 quadrantal triangle 直边三角形 quadrantal compass card 基点分度的罗经盘 ...
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quadrantal triangle detail 象限球面三角形
quadrantal spherical triangle [航] 象限球面三角形
quadrantal l triangle 象限球面三角形
quadrantal spher-ical triangle 球面直边三角形
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