短語詞組短語spindle bottom journal diameter 心軸下軸頸直逕bottom cone diameter 底流口直逕bottom m diameter 底逕Bottom -diameter 根耑直逕bottom diameter of thread 螺紋底逕Bottom diameter progressive increment 底逕遞增量socket bottom diameter 插口底直逕calculation for bottom diameter 底孔直逕計(jì)算Paper bucket bottom diameter 紙桶底逕 返回 bottom diameter