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内衬层 | |||
内保护层 | |||
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内盖; 副盖; 子盖 | |||
内封面 (flyleaf just after the cover); 扉页 (flyleaf just after the cover); 护页 (flyleaf just after the cover); 副页 (flyleaf just after the cover) | |||
内罩; 马弗罩 |
inner covering : 6 phrases in 5 subjects |
Chemistry | 1 |
Electric machinery | 1 |
Exhibitions | 1 |
Hydroelectric power stations | 2 |
Sports | 1 |