弹回

In order to change the condition that there was no applied strength analysis curve used in Ningxia Municipality, an experimental investigation, which took into account the local physical feature and aimed at detecting strength by resilience method, was made for C10~C50 concrete test cube with ZC3-A type concrete resiliometer.

针对宁夏地区目前尚未建立地区测强曲线，结合宁夏地区实际特点，对强度等级为C10~C50的混凝土试块采用ZC3-A型混凝土回弹仪进行了回弹法检测强度的试验研究。

In the sub-cluster scale theory, R1 indicated the possibility which the hole skip the middle size hole to become a big cell, it would make striking influence on the tensibility ; R2·R1 indicated the well-distribution degree of cell size, it would make the notable influence on the cell density P; R2/R1 indicated the big cell and small cell exchange possibility, it would make the remarkable influence on the re-spring degree because of the different influence with the hole size.

其中R1表征泡孔越过中等泡向大泡孔缔合的倾向，它对断裂伸长率影响最大；R1·R2表征泡孔的均匀性，受泡孔密度影响较大；lnR2／R1表征体系在发泡过程中大小泡孔相互转化倾向比，由于大小泡孔对泡体回弹率贡献不同，lnR2／R1对发泡体回弹率影响较大。

The result notes that dynamic triaxial test preferably simulate the actual stress state of grading macadam, and Uzan model which considers the shear performance of material can better reflect stress states of grading macadam. Regression coefficients of the model obviously present nonlinear characteristic with moisture changed, and to further influence dynamic resilient module.More the module is larger, more diminishing rate of maximum tensile stress on pavement Bottom is smaller. To enhance draining function and strength, the gradation should been rigid controlled, and which the content of less than 0.075mm is controlled between 5～7％ and spring-back is controlled between200~300MPa are appropriate.

结果表明，动三轴试验较好地模拟了级配碎石层的实际受力状态；Uzan模型考虑了材料的剪切性能，更能反映了级配碎石在隧道路面中应力状态；随含水量的变化，Uzan模型中回归系数变化呈明显的非线性特征，进而显著影响级配碎石的动态回弹模量的变化；级配碎石模量越大，路面层底的最大拉应力减小率越小；为了兼顾到级配碎石层的排水渗透功能和强度，应严格控制级配，特别是0.075mm以下的含量宜控制在5％～7％，级配碎石的回弹模量宜控制在200～300MPa之间。

By analyzing the forming process to engine bracket lower plate , and introduced the design of bending die,some measures to control spring back were extracted, the spring back problem of engine bracket lower plate was solved.

通过对发动机支架下板成形工艺的分析及其弯曲模结构的介绍，总结了几种控制回弹的措施，解决了发动机支架下板回弹难以解决的问题。

The relationship of spring back angle with bending clearance and die shoulder radius in the U-shaped bending of Aluminum alloy sheet was investigated.

主要研究了铝合金板材 U形弯曲回弹角与弯曲间隙、凹模入口圆弧半径之间的关系，分析了不同厚度的板材弯曲回弹角的差异。

This company mainly produces all kinds of processing: the ordinary sponge, slow rebound sponge, high-rebound sponge, household sponges, filter sponge, furniture, sponge, packing sponge, electronic cotton, decorative sponges, cotton brassieres, pu stereotypes sponges, scrub sponges, sponge craft, etc.; apply to electronics, toys, home daily, crafts, decoration, packaging, office style, cosmetics, sports type of health equipment, air purification filters, industrial machinery , household appliances, automobile beauty, health care and other industries.

本公司主要生产加工各种：普通海绵、慢回弹海绵、高回弹海绵、日用海绵、过滤海绵、家具海绵、包装海绵、电子绵、装饰海绵、胸围绵、pu定型海绵、洗擦海绵、工艺海绵等等；适用于电子、玩具、家居日用、工艺、装饰、包装、办公文体、化妆品、运动类保健器材、空气净化过滤、工业机械、家用电器、汽车美容、医疗保健等各个行业。

Springback character of rubber forming was studied by numerical method and springback compensation of rib flanging was analyzed.

基于数值模拟方法模拟了橡皮成形过程的回弹规律，对翼肋零件的翻边回弹进行了数值模拟，并通过试验进行了比较。

It can be used directly to display compressive strength and waveshape parameters of reinforced concrete structure being measured.

然而由于影响混凝土抗压强度的因素较多，目前我国生产的超声仪和回弹仪只能给出间接物理参数声肘和回弹值，许多换算和修正需人工脱离现场才能完成。

Assuming fluid is and viscid and slightly compressible, bubble collapse near rigid boundary and free surface is simulated, displaying characteristics such as formation, penetration and impact of reentrant jet as well as vortex ring and bubble rebound.

采用粘性、微可压流体模型，数值模拟了空泡在刚性边界和自由面附近溃灭及空泡溃灭后流动的发展，显示了空泡溃灭过程中的凹陷射流形成、空泡贯穿、射流冲击、涡环的形成和空泡回弹等流动特征，提出空泡回弹的另一种机制是凹陷射流冲击形成的旋涡。

On the condition that without destroying the object,this paper intends to introduce a more comprehensive way by using super-acoustic reflection after a practical analysis of several strength-testing curves made to the experimental old buildings natural cure.

本文利用超声回弹综合法对自然养护条件下长龄期卵石混凝土预留试块进行了测试，建立了超声回弹综合法测强曲线，并对测试结果进行了分析，对于长龄期混凝土测强技术的研究和应用，具有一定的参考价值。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。