精品国产AV一二三四区

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    1. ij˴ұƷ޹˾

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      λã > A֪R
      40crA䓲2012-10-23 40crAʲô@һ}҂ṩY1.ʲô40crA40crA䓣˜GB/T3077-20082.40crA䓻Wɷ֣̼C0.370.44Si0.170.37iMn0.500.80SSຬ0.035ס
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      40crAՓ2012-10-19 40crAՓ40crA&nbsp;Փ&nbsp;40crA&nbsp;Փ5.5&nbsp;0.186&nbsp;13&nbsp;1.046&nbsp;0.222&nbsp;14&nbsp;1.216.5&nbsp;0.26&nbsp;15&am
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      27simnAՓ2012-10-11 &nbsp;27simnAՓAֱdՓ&nbsp;kg/mAֱdՓkg/m5.50.186131.046&lt;****vAlign=top****?ce...&lt;&gt;
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      45#ΈAc45#AһN2012-10-08 45#ΈAc45#AһNð ȥɷNA䓺һ䌍Ȼ҂ɷN45#A䓅^e45#ΈA䓣DzϵһNӹˇڽٲָǞ_һΠһWܡ
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      AӋ㹫ʽ2012-10-08 AӋ㹫ʽͨrAӋ㹫ʽ=0.00617*d*d*L=0.00617*ֱ*ֱ*Lͬӵÿ׈AՓ=0.00617*d*dֱLȾA䓘˜LՓW=we*ܶ=3.1416*d^2/4*L*ܶ=[
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      Sa40CrA䓴ˇ40crܽB2012-10-04 Sa40CrA䓴ˇ40crܽB40CrA䓴ˇ40Cr850,ػ520,ˮ40CrӲȞHRC52-60_HRC48-5540crܽBWܣȦb(MPa)
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      ʲô̼YAʹ̼YA䓵ĺ̎Щ2012-09-27 ʲô̼YAʹ̼YA䓵ĺ̎Щ|̼ؽY䓺Q̼YAwv京̼С0.08%c̼|^ЇĻWɷֲҪCWָлs|^͵ă|̼
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      16mnʲô?FЈ16mnҲҊ,@ô?2012-09-06 16mnʲôFЈ16mnҲҊ@ô16Mnǣ16MnеͺϽߏȽY䓵ͺϽߏȽY䓣̼0.1%-0.25%,ҪϽԪiC≺⁵ĺϽ<3%ȷ֡
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      16mnA䓙Cеܘ˜ʲô?16mnA䓺ʲôWԪ?2012-09-03 16mnA䓙Cеʲô16mnAкЩWԪ҂16mnAMԔ˽⣺16mnA䓙Cеܣ16mnAһN䓲ĵIJ|ǵͺϽ䓣c<0.2%)CϙCؙܺ͜Cܺ_CәCܺͿɡ
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      16mnA䓻WɷּWӵ2012-08-30 16Mn䓲еһN|^ȥ䓲ĵһNз16Mn䓌̼i̼ĺ0.16%c343MPaȼe343MPa16Mn䓵ĺϽ^ǰһ㲻A16Mn䓵ĴӲAȡ
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      16mnA䓵ĈИ˜ʼҎʲô?2012-08-20 16mnA䓈И˜ʣ|Ҏ|ҎQ345B8-48016Mn16-150Q345B8-480
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      40crA䓵ԒǷ׃2012-08-03 40crAԭҪMбҪĸߜػ˻gٽY˻,ȻMȱҪĝWɷҪ̼i懵mğ̎ԫ@һgԺĥ@Nmڸlȡ
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      45#c27simnϽYAʹ^кβͬ2012-08-02 45#Ǻ̿0.45%̼ؽY,ַQ45̼Y,ڸ̼,ȸ,gԲ.45#DzҎ,GB˜45,wك|̼ؽY,ӲȲӹ,ģгÁģ,,,횟̎.45#䓏VڙCе,
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      䓲ĵҎͲ|Щ2012-08-01 1ģPlPA߾վҎ6.5mm8mm10mm12mmYԴһЩ|Q235|ĺxQȵСֵĵһĸ2䓽ݼy䓣ݼyHRB33520MinSiݼy
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      q235A䓱VЩط2012-07-28 q235AʲôõҪЩطPq235A䓵;ý̽Y䓽S߉ݔF܇v偠tҲҪ̫ߡ
      ߣadmin
      35̖ҪÁʲô2012-07-26 35̖c35#AʲôͬDzͬһNA35̖䓃|̼ؽYõԺmďˇ^пB{|Bʹ35̖䓏VN呼͟ቺ呡
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      fڈA䓹IоʲôҪ2012-07-25 fFIоҪf䓵ĺϽԪ䓵ďǸߜ؏ȺgAҺҺBеĿg߀䓵ĥ͟ԺͺԵfһNõγ̼
      ߣadmin
      ضߵ100ȕr̼䓵LȕӶ2012-07-24 L100ĈA20ȕr100.000ضߵ100ȕrǶLԓ҂̼䓁eӣ̼䓵ľÛϵa=(10.6~12.2)*10^(-6)Ӌ㹫ʽa=(L')/(L1*(t2-t1))딵ֵL'=12.2*10^(-
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      ݼyһݼyʲô߀͈Aÿ2012-07-19 ̖ͬAcݼyÿǷͬݼyڈA䓻AߵҎߵֱͬA3%Ҳ䓵ÿ7850Kgmmλ7.85*10^(-6)
      ߣadmin
      38CrMoAl42CrMo̖ĈAʲô^e2012-07-18 38CrMoAl42CrMo̖IJʲô^e38CrMoAlnjõ,һHҪ߶ĥ̎,ͨıӲ920HV,A̎{|(ͨ{|ӲҪ260HB,262~302HB)38CrMoAlٶ^
      ߣadmin
      Copy Right © 2012-2013 ij˴ұƷ޹˾ All rights reserved 
      精品国产AV一二三四区

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