qpaper to tell you, in a pure moment bending works under the table were studied. Here, we investigated several cases, Guangdong tension membrane structure and moments applied to a4 paper. The elastic first example, we consider the perfect pre-curved flexible plastic sheet is then applied tension. In the case of a rigid, the perfect combination of plastic sheet tension and torque is then analyzed and dragged voltmeter tension in the mold at some radius. Section 6.2 gives a similar name. Use, i.e., a continuous sheet of a force per unit width or per unit of surface and the tension T of the width of the torque M. Flexural modulus E Guangdong membrane structure under plane strain state establishment of 'given in equation 6.10, yield stress and plane strain is S. It should be noted that one of the plastic bending, because the analysis is the result of nonlinear effects, the tension and torque command applied.

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Book a4 paper are: Bond, watermark paper, security thread paper and other specialty paper; 2, can proofing? Proofing two ways: digital proofing, traditional proofing. Digital proofing is to use customers' needs a4 paper print out, but special inks, etc. can not be printed out, and with the traditional printed color. Such proof is not needed costs. Traditional proofing, which uses actual printing presses, because of the need of the film, do Edition. 3, a4 paper certificate of authenticity common security technology? Security inks, security version of profiling, security relief, security a4 paper, security envisaged the production out of the world a4 paper, after using all recycling is impossible. Currently the world average utilization of waste paper accounts for paper and paperboard production of more than 32 European waste paper recycling amounted to more than 50. Sources said: Japan newsprint paper fiber containing 42 average shape. United States by decree, mandatory recycling waste paper, and the paper industry put forward higher requirements, cost of waste paper recycling waste paper recycling, has been the most attractive because of its low cost advantage. When the New England region Nissan 100 tons of waste paper mills produce white paper, raw material costs accounted for about two fifths. Production costs $ 318.95 / ton, the total cost of $ 343.95 / ton, sales price of $ 400. / ton. Monthly earnings of $ .5 evil million. American Garden mill with 100 shaped old newspapers newsprint deinking, and with the cost of virgin fiber pulp newsprint (Unit: USD / ton) virgin pulp over 100 old newspaper deinking 06916 Four 15CJ13741 the 856Jl, workers CO feed force the original action plan in 1995, the amount of recycled waste paper reaches over 40. Britain also plans to produce newsprint paper fiber fiber feedstock ratio increased to 40 Extension. Preliminary forecast end of this century, the world, the amount will reach 50 shaped paper back. The use of waste paper pulp, as well as a pulp quality control problems. Obviously, it is impossible to unlimited paper being repeatedly recycled to use, its limit is dependent on the fiber quality deterioration rate and extent. In processing old newspapers pulp compound, which contains high-yield mechanical pulp, including chemical thermo mechanical pulp and pressure groundwood pulp, retain a higher lignin fibers stiffened. After crushing mach

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