短語詞組短語grain size grade 粒度等級;粒級grain grade structure 粒級結(jié)搆grain n size grade 粒度等級grain -size grade 粒逕級diamond grain grade 金剛石粒度grain grade adapt 顆粒級配off grade grain detail 等外種子nanometer -grade grain 納米級顆粒off grade grain 等外種子 返回 grain grade