It can utilize two measuring methods, knife-edge scanning and slit s c anning.
其测量采用了刀口扫描和狭缝扫描两种方式。
参考来源 - 光学传递函数测量仪刀口和狭缝两种扫描方法比较分析 The calculation and analysis of knifeThe developing solvent was chloroform-methanol-water（18:2.3:0.35, v/v/v）. All analytical determinations were performed by deuterium lamp and tungsten lamp lighting,single wavelength reflexology absorption scanning in 345 nm,scanning speed 5 mm/s,scanning time 3 min,slit 5.00×0.30mm.
采用G60硅胶板（10cm×10cm）和氯仿-甲醇-水（18:2.3:0.35）为展开剂,以氘灯和钨灯为光源,在345nm波长下,单波长反射法吸收扫描,扫描速度5mm/s,狭缝5.00×0.30mm,扫描时间3min。
参考来源 - 芹菜黄酮类物质的分离纯化与药理功能研究·2,447,543篇论文数据，部分数据来源于NoteExpress
V-T If you slit something, you make a long narrow cut in it. 切开; 撕开
They say somebody slit her throat.
他们说有人割断了她的喉咙。
He began to slit open each envelope.
他开始撕开每个信封。
N-COUNT A slit is a long narrow cut. 狭长的切口
Make a slit in the stem about half an inch long.
在树干上割一个约半英寸长的口儿。
N-COUNT A slit is a long narrow opening in something. 裂缝; 缝隙
She watched them through a slit in the curtains.
她透过窗帘的缝隙注视着他们。
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