短語詞組短語spiral l grain 扭轉(zhuǎn)紋spiral grain index 螺紋指數(shù)spiral grain loader 螺旋式裝糧機(jī)Artificial spiral grain 擬旋回木理;人造螺旋紋理spiral grain selector 螺旋選晶器uniform strength straight spiral grain 等強(qiáng)直螺紋 返回 spiral grain