Classic Hardcover Book Set yog ntau daim ntawv sau tseg hauv phau ntawv tshaj tawm txog kev ua haujlwm zoo, cov phau ntawv nplua thiab cov phau ntawv siv feem ntau.
Muaj ob peb hom cov phau ntawv nyuaj:
Muab faib los ntawm qaum daim ntawv, muaj ob hom square spines thiab round spines.
Lub qhov nqaj qaum dua yog qhov thicker dua cov phau ntawv thaiv. Vim yog qhov folding ntawm phau ntawv thaiv thiab cov hlua, qhov siab ntawm tus nqaj qaum yog siab tshaj qhov ntawm phau ntawv thaiv, thiab ntau tshaj cov ntawv luam, qhov ntau pom tseeb. Yog li ntawd, phau ntawv hardcover ntawm lub qhov nqaj qaum yuav tsum tsis yog tuab heev, feem ntau haum rau tus txha nraub qaum rau hauv 20mm.
Vim hais tias txoj hauj lwm ntawm sab xub ntiag thiab sab nraub qaum yog qhov txawv me ntsis, tus quav ntawm phau ntawv yog ib qho me me ib nrab, muab faib rau ib txheej nkhaus, thiab nws cov tuab kuj zoo ib yam. Qhov qhib rau ntawm phau ntawv thaiv yog muab kho rau lub rooj sib xyaw ntawm tus txha nraub qaum thiab yog qhov tseeb thiab muab hloov. Yog li ntawd, cov phau ntawv thicker siv cov kab txhauv. Cov kab lus ntawm cov kab lus coj los ua ke yog muab los ntawm kev sib tw rau qhov nraub qaum rov qab mus rau hauv cov duab kos. Feem ntau, cov phau ntawv tseem ceeb yog 130 ° rau txoj hlua thiab qhov khub arc. Tawm puag ncig tau muab faib ua ob hom: ib puag ncig rov tsis muaj caj dab thiab ib puag ncig nrog caj dab (qhov siab ntawm txoj hlua yog feem ntau yog tib yam li cov thickness ntawm daim duab los ntawm cov ntaub ntawv phau ntawv).
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