这是砑光机上的过度热力或压力所造成的纸张故障。
It is a paper defect caused by undue heat or pressure in the calendars.
漆布（人造皮）：装订用布料，经砑光的染色胶料棉布。
Leather-cloth: cloth for bookbinding. A plasticated cotton that dyed-through and calendered.
在粉纸上特别显著的灰色或斑点状情况。这是砑光机上的过度热力或压力所造成的纸张故障。
Bruising a grey or mottled effect, most noticeable in coated papers. It is a paper defect caused by undue heat or pressure in the calendars.
瘀痕：在粉纸上特别显著的灰色或斑点状情况。这是砑光机上的过度热力或压力所造成的纸张故障。
Bruising: a Gray or mottled effect, most noticeable in coated papers. It is a paper defect caused by undue heat or pressure in the calendars.
瘀痕：在粉纸上特别显著的灰色或斑点状情况。这是砑光机上的过度热力或压力所造成的纸张故障。
Bruising: a Gray or mottled effect, most noticeable in coated papers. It is a paper defect caused by undue heat or pressure in the calendars.
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