In this paper,we discussed some questions about the concepts of increase or decrease of functions in a interval or at a point ,and we pointed out several mistakes in the book“Introduction to Higher Mathematics”written by Prof.
本文叙述与函数在一个区间内单调及在一点处增大或减小这两个概念有关的一些命题,指出华罗庚先生所著《高等数学引论》中的几点疏忽。
Printing experiments under the same and different printing pressures are carried out,and dot gains of different dot percentages under the same printing pressure and those of the same dot percentage under different printing pressures are achieved by testing on printing products.
分别在相同印刷压力和不同印刷压力2种状态下进行印刷试验,并检测其印品,得到在相同印刷压力下各色组不同网点百分比的网点增大值和在不同印刷压力下各色组相同网点百分比的网点增大值,分析比较各色组网点增大值与印刷压力的大小关系,从而得到各色组合理的印刷压力修正值,使得各色机组的印品网点增大值一致。
The paper present a study about how different dot shapes affect dot gain in flexographic printing,which aims at enhancing the capability that halftone dot are reproduced in the printing process.
为提高柔版印刷的网点再现性,研究了不同形状的网点对柔版印刷网点增大的影响。
Gray balance is predictable across different screen rulings by a mathematical model considering dot gains of cyan,magenta and yellow.
在印刷过程中,如果考虑了C、M、Y印版的网点增大,那么,不同加网线数条件下的灰平衡数值是可以用数学模型很好预测的[1]。
An explicit formula for the enhancement factor in gas-liquid absorption with irreversible chemical reactions is presented.
提出气液化学吸收增大因子β的显函数式，并分别同膜理论、渗透理论模型以及可vanKrevelen—Hoftijzer隐函数式的数值解比较，证明显函数式相当逼近该二理论模型，同时在准确性和方便性方面都优于隐函数式。