腔背,穹状书脊(书背和书

身不粘

一起的精装,各国现

一般均通行这种形

,


称之为腔背)
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Duranmium,
durapatite,
Duraperm,
Duraplex,
Durargid,
Duraspon,
duration,
durative,
Durban,
durbar,
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hollocellulose,
Hollofil,
hollong,
holloo,
hollow,
hollow back,
holloware,
hollow-eyed,
hollowhearted,
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