常見例句雙語例句Results The Chang 4+5 reservoir rock of Jiyuan Oilfield is mainly lithic arkose with average rock fragment content of 17.結(jié)果姬塬油田長4+5儲層巖性主要爲(wèi)巖屑長石砂巖，巖屑平均含量17。Meanwhile, which can improve the blasting effect, made the rock fragment more uniformly, and improve the blasting efficiency.改善爆破質(zhì)量，使破碎塊度更加均勻，從而提高爆破傚率。A type of secondary porosity created through the dissolution of a preexisting constituent of a rock, such as a shell, rock fragment or grain.一種通過先存巖石組分（如生物介殼，巖屑或巖石顆粒）的溶解所造成的次生孔隙類型。www.infopetro.com.cn 返回 rock fragment