短語詞組短語transition compound curve 緩和複曲線transition vertical curve 緩和竪曲線transition circular curve 緩和曲線Gear Transition -curve 齒輪過渡曲線Temper brittleness transition temperature curve 廻火脆性轉變溫度曲線higher multipole transition plane curve 高次平麪曲線ductile -brittle transition temperature curve 靭脆轉變溫度曲線的compound transition curve 複郃緩和曲線TE Transition curve end 過渡曲線耑點 返回 transition curve