单词	delta operator
释义	delta operator δ算符
随便看	setback building setback buttress setback capacity setback corner joint setback force set back front axle setback horizontal load set-back levee setback line setback of brush setback pin setbacks set-backs set-back scale set back scale setback system set back the clock setback type set bail set bar set before set behind Setberg set beside set beside the cushion 穷见穷，心里疼，穷不帮穷谁帮穷穷讲究穷达有命，祸福惟人穷过渡穷途容易见德穷途末路，举目无依穷途末路，铤而走险穷通有时穷遮不得，丑瞒不得穷遮不得，富瞒不得戦費戦跡戦車戦野戦闘戦陣戦隊戦雲截截つ