-
In some cameras of this type the drum is rotated at high speed.
在此种类型的某些摄影机中，鼓轮是高速转动着的。
youdao
-
If the normal, high-speed friction film and brake drum clearance.
若正常，可高速磨擦片与制动鼓间隙。
youdao
-
If the normal, high-speed friction film and brake drum clearance.
若正常，可高速磨擦片与制动鼓间隙。
youdao