短語詞組短語enveloping space surface 包絡(luò)空間enveloping g surface 包絡(luò)面enveloping surface of folds 褶皺包絡(luò)面enveloping surface method 包絡(luò)面法Sphere Enveloping Surface 包絡(luò)面enveloping surface of fold 褶皺包絡(luò)面 返回 enveloping surface