mask film

• 掩膜

mask film的用法和样例：

例句

1. The substrate is first covered by a mask.
   首先在基片上覆盖一个掩膜片。
2. An image of the patterns on the mask is projected onto the resist-coated wafer, which is many centimeters away.
   掩膜板上图形的像被投影到许多厘米以外的涂有抗蚀剂的片子上。