| Change log entry 45734 | |
|---|---|
| Processed by: | goldyn_chyld (2013-01-19 15:16:45 UTC) |
| Comment: |
<< review queue entry 43810 - submitted by 'goldyn_chyld' >> Z: 书页上端的空白处。 Optical centre: The visual centre o fa page. Its position is on the vertical centre line, about 2/5 of the page depth from the head of the page. 视觉中点:页面视觉上的中心点。它的位置在垂直分中线上，从天头计，书页深度5分之2的地方。 On bound work, trimming is only required on head, foredge and tail. Normal trim allowance is about 3 mm(1/8 inch).but for bled work, about 6 mm (1/4 inch) is required. 订本则只需裁切天头，切口和地脚。一般的裁切量约3毫米(1/8 寸) ；出血印件则约为6毫米(1/4 寸)。 |
| Diff: |
+ 天頭 天头 [tian1 tou2] /the upper margin of a page/ |