特殊用法advance heading1.导向井air heading1.(隧道)通风坑道attack heading1.【航空】攻击航向average heading1.【航空】平均航向bottom heading1.下导坑, 底导坑broad heading1.大项目, 大类cardinal heading1.【航海】正方位艏向chapter heading1.章节标题, 回目class heading1.分类标题, 类目cold heading1.【冶】冷锻; 冷镦头compass heading1.航向罗盘方位, 罗盘航向control heading1.控制头栏course heading1.航向cut-in heading1.【刷】(用黑体字或方框标出的正文最前端的)文间标题dead heading1.车船空回double headings1.【采矿】双平行煤巷exploratory heading1.勘探导洞explosive heading1.爆破导坑final heading1.【航空】最终航向form heading1.【刷】(说明书籍类型的)书型标题gob heading1.【采矿】采空区内平巷grid heading1.【航空, 航海】格网航向hot heading1.热镦粗, 热顶锻[镦]initial heading1.【航空】初始航向inverted heading1.【刷】倒置标目, 倒排标题leading heading1.【采矿】超前煤巷[平巷]magnetic heading1.【航海】磁艏向main tunnel heading1.主导洞monkey heading1.【采矿】窄小巷道pilot heading1.超前导洞report heading1.报表头, 报表提要true heading1.【航空】真航向tunnel heading1.隧道导洞