基本解釋[經(jīng)濟學]節(jié)錐母線長度詞組短語短語pitch -cone apex to crown distance 節(jié)錐頂?shù)烬X冠的距離pitch cone distance更多詞組專業(yè)釋義經(jīng)濟學節(jié)錐母線長度