常見例句雙語例句Change the flute structure to study the contrast of the floe field, provide the basis for the drill bit flute design.改變排屑槽的分布方式，研究井底流場變化規(guī)律，為鉆頭排屑槽的設(shè)計提供依據(jù)。lib.swpu.edu.cn 返回 floe field