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mass friction
相关语句
  质量摩擦
     A practical optimization for parameters of tuned mass friction system
     调谐质量摩擦系统参数优化的独立关联算法
短句来源
     If the friction between the roof and supports is used as damping to form tuned mass friction sys- tem, the structure becomes simple.
     再利用屋盖与其支承结构之间的干摩擦替代粘滞阻尼,可构成调谐质量摩擦系统,使控制系统更加经济简练。
短句来源
  “mass friction”译为未确定词的双语例句
     Al_8Fe_2Si powder was obtained by milling Al-7%Si(mass friction) hyporeutectic alloy melt at 963 K after 48 h.
     在963K球磨Al 7%Si亚共晶合金熔体,球磨48h后,Al Si液相消失,得到固态的Al8Fe2Si合金粉末;
短句来源
     Al_(65)Co_(15)Cu_(20)powder was obtained by milling Al-33.2% Cu(mass friction)eutectic alloy melt at 923 K or 973 K for 12 hours, and Al_(69)Co_(25)Cu_6 powder was prepared when Al-33.2%Cu alloy melt were milled at 923 K or 1 023 K for 24 hours.
     分别采用Co球球磨Al 33.2%Cu(此文中的百分比为质量分数),Al 54%Cu(Al2Cu)和Al 70%Cu(AlCu)二元合金熔体,在923K和973K球磨Al 33.2%Cu熔体12h后生成Al65Co15Cu20粉末;
短句来源
     Al_7Cu_4Ni powder were obtained by milling w_(Al)33.2%w_(Cu)(mass friction)eutectic alloy melt at 893 K for 12 or 24 hours,and Al_7Cu_4Ni powder were also prepared when w_(Al)-54%w_(Cu) alloy melt were milled at 893 K for 24 hours.
     采用Ni球球磨wAl-33.2%wCu,wAl-54%wCu(Al2Cu)和wAl-70%wCu(AlCu)二元合金熔体,在893 K分别球磨wAl-33.2%wCu熔体12 h和24 h后均生成了Al7Cu4Ni粉末;
短句来源
     Amout,porperties and application of master batch of polypropylene resin and film sheets for weaving bag by means of adding antistatic master batch are studied. The best amount of antistatic master batch is 3.5%(mass friction). The PP film, which surface resistivity is decreased from 10 15 Ω to 10 10 ~10 11 Ω and the mechanic properties maintain the same and meets the requirement for manufacture of antistatic weaving bag.
     采用外添加抗静电母料方法 ,研究了编织袋用聚丙烯树脂和膜片的抗静电母料的用料、性能和应用 ,适宜的抗静电母料用量为 3 5 % (质量分数 ) ,聚丙烯膜片表面电阻率从 10 1 5Ω降为 10 1 0 ~ 10 1 1 Ω ,力学性能基本不变 ,满足了抗静电编织袋生产需要。
短句来源
     The main of various factors in which the moving track of vehicle is effected such as front wheel drive turning angle and the distance between anterior and after axes have been merely taken into account in the paper, when the micro vehicle model is established. And that the other influencing factors such as mass, friction and rigid body coefficient etc are negligible, because they are subordinate in this study.
     构建微观车辆模型时 ,在影响车辆运行轨迹的各个因素中 ,可以只考虑前轮转向角和前后轴间距离 2个主要因素 ,而质量、摩擦、刚体系数等其他次要因素是可以忽略的。
短句来源
更多       
  相似匹配句对
     Mass.
     Mass .
短句来源
     On Friction
     谈谈摩擦力
短句来源
     Application of Friction in Passive Tuned Mass Damper
     干摩擦在调谐质量阻尼器系统中的应用
短句来源
     STUDY ON DRY FRICTION DAMPED SYSTEM WITH TUNED MASS DAMPER
     具有调谐质量阻尼器(TMD)的干摩擦隔振系统的研究
短句来源
     On Mass Utilitarianism
     人民功利主义论
短句来源
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  mass friction
The Hoek and Brown's failure criterion was applied for each lithotechnical unit and the rock mass friction angle, apparent cohesion, tensile and compressive strength, global strength and modulus of deformation calculated in a specified stress range.
      


Two kinds of highly active catalysts composed of TiCl 4 SiO 2 MgCl 2 AlR 3(SM) and Mg RX TiCl 4 AlR 3(MG 2) for the gas phase polymerization of ethylene were studied The mass friction of Ti,the surface area of catalysts and catalytic activity in SM and MG 2 are 2%~3%,6%~7% by mass, 105~120,70~85 m 2/g,the mass of PE catalyzed by 1 g of Ti in one hour is 5 0~5 7,1 8~2 0 kg,respectively.Kinetic curve of ethylene polymerization with SM is decadent and that with MG 2 is...

Two kinds of highly active catalysts composed of TiCl 4 SiO 2 MgCl 2 AlR 3(SM) and Mg RX TiCl 4 AlR 3(MG 2) for the gas phase polymerization of ethylene were studied The mass friction of Ti,the surface area of catalysts and catalytic activity in SM and MG 2 are 2%~3%,6%~7% by mass, 105~120,70~85 m 2/g,the mass of PE catalyzed by 1 g of Ti in one hour is 5 0~5 7,1 8~2 0 kg,respectively.Kinetic curve of ethylene polymerization with SM is decadent and that with MG 2 is steady.The influence of catalytic properties on gas phase polymerization of ethylene were discussed.The morphology of catalyst particles of SM and MG 2 is studied by SEM and image analysis The average value of particle diameter( ) ,the ratio between major axis and minor axis of the particle( d l /d s) and the ratio between big and little particle diameter( d max / d min ) of the SM MG 2 catalyst are 31 μm, 33 μm,1 402,1 524 and 4 1,7 0, respectively. The corresponding values ,d l /d s ,d max / d min of polymerization product for SM and MG 2 catalyst are 247 μm,263 μm,1 295,1 540 and 4 6,9 0, respectively The results indicate that the quality of SM catalyst is good

研究了2种类型的乙烯气相聚合高活性催花剂.用SiO2,MgCl2作复合载体,负载TiCl4制得的SM型催化剂,载体中含w(Ti)为2%~3%,w(Ti3+)为35%~59%,比表面积105~120m2/g,催化活性每小时每克催化剂Ti催化得5.0~5.7kg产物PE(kg·g-1·h-1),聚合动力学曲线为衰减型.用镁粉、卤代烷、四氯化钛为主要组分制备的MG-2型催化剂,载体中w(Ti)为6%~7%,w(Ti3+)为55%~69%,比表面积70~85m2/g,催化活性1.8~2.0kg·g-1·h-1,聚合动力学曲线为平稳型.对SM型催化剂扫描电镜及图象分析得到颗粒平均粒径(d),颗粒长短轴比(dl/ds)及颗粒大小粒径比(dmax/dmin)分别为31μm,1.402,4.1,MG-2型催化剂为33μm,1.524,7.0,相应聚合产物颗粒的d,dl/ds,dmax/dmin,SM型催化剂为247μm,1.295,4.6,MG-2型催化剂为263μm,1.540,9.0.显示出SM催化剂更优良的聚合性能.

Amout,porperties and application of master batch of polypropylene resin and film sheets for weaving bag by means of adding antistatic master batch are studied. The best amount of antistatic master batch is 3.5%(mass friction). The PP film, which surface resistivity is decreased from 10 15 Ω to 10 10 ~10 11 Ω and the mechanic properties maintain the same and meets the requirement for manufacture of antistatic weaving bag.

采用外添加抗静电母料方法 ,研究了编织袋用聚丙烯树脂和膜片的抗静电母料的用料、性能和应用 ,适宜的抗静电母料用量为 3 5 % (质量分数 ) ,聚丙烯膜片表面电阻率从 10 1 5Ω降为 10 1 0 ~ 10 1 1 Ω ,力学性能基本不变 ,满足了抗静电编织袋生产需要。

It is a good idea that the building roof may be used as the mass of a tuned mass damp- er. If the friction between the roof and supports is used as damping to form tuned mass friction sys- tem, the structure becomes simple. According to this situation, a simplified optimization method is presented in which the systematic stiffness is optimized independently and then the systematic friction is optimized in the condition of the optimum stiffness. This method is suitable to finite element ana- lysis...

It is a good idea that the building roof may be used as the mass of a tuned mass damp- er. If the friction between the roof and supports is used as damping to form tuned mass friction sys- tem, the structure becomes simple. According to this situation, a simplified optimization method is presented in which the systematic stiffness is optimized independently and then the systematic friction is optimized in the condition of the optimum stiffness. This method is suitable to finite element ana- lysis and practical design. It is approved by digital emulation that the friction has little effect on the optimum value of the stiffness and the stiffness has considerable irregular effect on the optimum val- ue of the friction. It is also demonstraed that the optimum stiffness can be computed without fric- tion, then the optimum stiffness can be used in the optimization of the friction, and combination of these two optimum values reaches almost the best status.

利用屋盖作为被动调谐质量阻尼器(TMD)的质量块是解决TMD附加质量问题的一种较好的方案。再利用屋盖与其支承结构之间的干摩擦替代粘滞阻尼,可构成调谐质量摩擦系统,使控制系统更加经济简练。针对干摩擦的特点提出了独立优化刚度,再优化摩擦系数的算法。该算法适应有限元格式和实际工程设计。数值模拟证实了调谐质量摩擦系统的摩擦力对刚度最优值的影响较小,而刚度对摩擦最优值的影响较大、规律较差的事实,论证了在无摩擦得到的优化刚度可以直接用于摩擦力优化中、用此方法设计调谐质量摩擦系统几乎能够达到最优配置。

 
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