单词	三角洞
释义	三角洞trigonal hole
随便看	dual-range balance dual-range piston gauge dual-rate method dual rate system dual rate transceiver dual-ratio transformer dual rear tire dual recirculation dual-recording dual recordings dual reduction drive dual-reflector antenna dual register burner dual register burner with primary air exchange dual-register burner with primary air exchange dual-register swirl burner dual relationship dual release dual representation dual representation module dual resonance dual responsibility dual ring network dual-ring topology dual-rotation