- monochromatic pinhole method
- 单色: monocolour; monochromatic
- 法: law
- 单色针孔技术: monochromatic pinhole technique; monochromatic pinholetechnique
- 接触针孔法: contact pinhole method
- 针孔: blacking hole; damage caused by needle; ear; needle hole; pin holes; pinbioling; pinholes; pinholing ink; pinning defect; piqre; pores; puncturing site
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