常見例句雙語例句In this paper, two kinds of compaction technologies used for the gap semi-open gradation (GSOG) asphalt mixture are introduced.簡(jiǎn)要介紹了間斷半開級(jí)配瀝青混郃料的兩種壓實(shí)工藝以及壓實(shí)度的過程控制方法； 返回 gap gradation