底片

I have three exposures left on this film.

这卷胶卷我还有三张底片未拍。

How many exposures have you made?

你拍过几张底片了?

Block out this unimportant detail at the top of your picture.

在底片上把图像上部的这个不重要的细节涂抹掉。

Through controlling the each step in process of darkroom disposal,improve the quality of the sciagram efficently.

通过对暗室处理过程中个环节的控制,有效提高射线底片的质量。

For areas where the film density through the weld varies by more than from the density through the penetrameter, an additional penetrameter shall be used for those areas.

当焊缝区域底片黑度变化超过透度计处黑度时，应在该处另加透度计。