The paper substrate is coated on both sides with water-impermeable resin which carries an light sensitive emulsion on one side.
纸蕊的两面涂上防水树脂，再于其中一面涂上感光乳剂而成。
The paper substrate is coated on both sides with water-impermeable resin which carries an light sensitive emulsion on one side.
纸蕊的两面涂上防水树脂，再于其中一面涂上感光乳剂而成。
应用推荐