卷片方向 meaning in English
advance a
Examples
- The light is admitted through a slit in the curtain across the line of film motion .
利用帘布上的长条形狭缝沿卷片方向的运动来控制光线的进入。 - The curtain is tensioned between two rollers which pull the slit across the film at various speeds .
帘布被绷紧在两个卷轴之间，卷轴能使长条形狭缝以不同的速度沿卷片方向运动。