理学 水声探测 释 caustic 焦散 在射线声学理论中，使聚焦因子趋于无穷大的现象。使聚焦因子趋于无穷大的点称为焦散点，其邻近区域是射线管聚焦所致的声强急剧增强区，称为焦散区。射线族上由临近声线交聚点（焦散点）所形成的包络线称为焦散线，而由临近声线交聚线（焦散线）所形成的包络面称为焦散面。
计算机应用 计算机辅助设计与图形学 释文 caustics 焦散
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