deltaicadj.三角形的(三棱的；扁方形的)deltan.(河流的)三角洲；希腊语第四个字母（Δ、δ）delta EEG sleep inducing peptide睡眠肽Delta Logistical Support Activity三角洲后勤支援处Delta Military Assistance Command三角洲军援司令部Deltadehydrocortisone preparationδ脱氢可的松制剂Delta Regional Assistance Command三角洲地区支援司令部Delta oasis of Weigan-Kuqa River渭干河-库车河三角洲绿洲delta-bilimbin/total bilirubinδ-胆红素／总胆红素Delta Winglet Pair vortex generators三角小翼式涡产生器delta-Aminolevulinate dehydrase deficiencyδ-氨基乙酰丙酸脱水酶缺乏delta-sigma digital-to-analog converter过采样数模转换器