transmitting system短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 变送系统,传输系统,发送系统 From the internal and external corrosion prevention, writer discussed material selection and corrosion prevention of Kera-2 gas gathering and transmitting system. 本文从内防腐和外防腐两个方面，探讨了克拉2气田内部集输管线的材料选择和腐蚀防护问题。 cnki