scan: vt.(-nn-)1.细看，细察；审视。2.〔口语〕大略一阅；浏览。3.按韵节念，按句调读，标出(诗)的格律(指划分音步)。4.【电视】扫描；扫掠；搜索。vi.1.(诗)符合格律，读起来抑扬顿挫。2.【无线电】扫描。短语和例子This line does not scan. 这一行不合韵律。n.1.细看；细察。2.扫视，浏览。3.【电视】扫描；扫掠。4.眼界；视野。
Standard test method for measuring n - heptane induced phase separation of asphaltene - containing heavy fuel oils as separability number by an optical scanning device 使用光扫描设备测量作为可分离性值的含沥青重燃料油的n -庚烷感应相位分离的标准试验方法
