special item短语¹⁴⁴⁹⁷²⁺² 基本例句 特殊项目 Briefly described were the results of an experimental study on the nozzle group oil- circuit flow characteristics of a heavy-duty gas turbineNational 863 Program Major and Special Item. 概述了在研的某重型燃气轮机喷嘴组油路的流量特性试验研究结果。 dictall