[数] 参考线；[测] 基准线 line of reference: 参考线line reference: 管线号reference line: 参比线; 参证线; 基线; 基准线,参考线reference line; standard pitch line: 分度线aircraft boresight reference line: 飞机校准参考线下载手机词典可随时随地查词查翻译
