quarter plate
noun
1- Brit. 〈英〉a photographic plate measuring 314×414 inches (c. 8.3×10.8 cm).314×414英寸干版（或底片）（约8.3×10.8 cm）。
1.1
- a photograph reproduced from such a plate.314×414英寸照片（约8.3×10.8 cm）。