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试卷(A) 1.填空题(每空1分,共30分) ①切纸机刀片α角大小的选用是根据纸的_____、_____、所切_____高度决定的,刀片α角越小、刀刃就______,其抗切力就______,反之_____;常用α角应是____～_____度。②精装书背圆势是以书心_______计算的,书心扒圆后的圆弧所对的______一般应在______至______度之间;起脊高度是以______厚度计算的,一般高度为______至______mm;脊高与书表面的倾斜度为______度。
Paper (A) 1 fill in the blank (1 point for each empty, a total of 30 points) ① Cutter blade angle α size selection is based on paper _____, _____, cut _____ height decision, the blade angle α Small, blade on ______, its resistance to force on ______, on the contrary _____; commonly used α angle should be ____ ~ _____ degrees. ② hardcover bookback potential is based on the book _______ calculation, book grilled round after the arc ______ should generally be between ______ to ______ degrees; from the ridge height is _____ Thickness calculation, the general height of ______ to ______mm; ridge height and book surface inclination of ______ degrees.