一般都备有铰链着的玻璃盖面，以把稿件夹平。有些更可以换上透明片架，在后面打灯照明。
Frequently it has a hinged glass cover to hold copy flat, and may have a removable section in which a transparency holder can be positioned for back-lighting illumination.
注意：新一代的汽车前挡玻璃是以两片玻璃中间夹著一层薄薄的塑胶膜而成。
NOTES: Modern automotive windshields contain a thin plastic sheet between two layers of glass.
注意：新一代的汽车前挡玻璃是以两片玻璃中间夹著一层薄薄的塑胶膜而成。
NOTES: Modern automotive windshields contain a thin plastic sheet between two layers of glass.
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