粘结的

First of all, titanium has excellent biocompatibility, high mechanical strength and low proportion; the second, the potential biological toxicity of non-noble alloys (such as alloys of Co-Cr and Ni-Cr)was avoided; the third, the disadvantage of over-abrasion of antagonization teeth resulted from high rigidity of porcelain was also avoided; the last, metal-resin bonding prostheses was easy to be repaired in mouth.

随着硬质树脂性能的进一步提高及钛铸造技术和粘结技术的发展，钛-树脂粘结修复体的应用将越来越广。通过课题组成员的一致努力，以往困扰钛-树脂粘结修复在临床应用的钛与树脂的粘结强度较低这一关键问题已较好的得以解决。

According to experimental data, the ultimate bond stress and bonding-slipping constitutive relation and effective bond length.

根据试验数据回归出基于相对保护层厚度和相对有效粘结长度的极限粘结应力计算公式和粘结应力与滑移的本构关系式。

According to experimental data, the ultimate bond stress and bonding-slipping constitutive relation are presented based on the thickness of protection layer and effective bond length.

根据试验数据回归出基于相对保护层厚度和相对有效粘结长度的极限粘结应力计算公式和粘结应力与滑移的本构关系式。

Influence of various parameters including ratio of nonprestressed reinforcement, ratio of unbonded prestressing tendon, span-depth ratio, effective prestress, cylindrically compressive strength of concrete, ultimate tensive strength of prestressing tendon, yield strength of nonprestressed reinforcement and loading pattern on the behavior of unbonded prestressed concrete beams and the ultimate stress in tendon, f_, are investigated in detail. Parameters having important influence on second-order effects of externally prest

本文设计了8个系列共76根体内无粘结预应力梁，以及2个系列共21根体外预应力梁和3根体内无粘结预应力对比梁，利用提出的有限元模型对这些梁进行非线性全过程分析，详细研究了各种参数诸如非预应力筋配筋率、无粘结预应

Effects of dry temperature and dry time on properties of heat cured sand and the relationship with binder composition are as follows:sands bonded by binders that are not modified have high strength when dry temperature is high and dry time is long,but their anti-wettability power is poor . Sands bonded by binders that are modified by B but not modified by M can be dried quickly and sand strength is high but anti-wettability power is also poor. Sands bonded by binders that are modified by M but not modified by B can also be dried quickly to obtain maximum strength,then the strength becomes lower when they are dried continually for more time. and sand strength is high but anti-wettability power is also poor. Sands bonded by binders that are modified by M as well as by B at the same time can be dried quickly to obtain maximum strength at low temperature and short time. But the anti-wettability of sand mold is best when they are dried at high temperature and long time.

烘干温度和烘干时间对热硬砂性能的影响及其与粘结剂改性的关系是：未经改性剂B和改性剂M改性的粘结剂砂，脱水速度较慢，烘干温度越高，时间越长，则硬化强度也越高，但未经改性的粘结剂热硬砂的抗吸湿性较差；经改性剂B而不经改性剂M改性的粘结剂热硬砂，烘干硬化速度较快，强度也高，但在高湿度下的抗吸湿性不好；经改性剂M改性而不经改性剂B改性的粘结剂热硬砂，烘干时强度先随烘干时间升高至最大值后，继续烘干时强度又出现下降；经改性剂B和经改性剂M共同改性的粘结剂热硬砂能在短时间和较低的烘干温度下就可烘干到最高强度，即烘干脱水的速度较快，但试样的抗吸湿性差，若在更高温度和更长时间下烘干，试样的抗吸湿性得到改善，综合考虑烘干强度和抗吸湿性要求，对于φ30×30mm试样，理想的烘干温度是200℃，烘干时间20分钟。

The layers can increase obviously the destiny of microstructure, magnetic properties Br, Hcb, m and compressive strength of the NPMC bonded by plastic. The epoxy coating can improve effectively the corrosion resistance of the NPMC and delay the rust of NdFeB particles, especially the pycno-film of the cathodal electrophoresis epoxy resin plays a dominant role in the achievements. The investigation of the temperature stability of the NPMC bonded by plastic, whose NdFeB magnetic particles are NFZ-1 and Nd〓Fe〓B/α-Fe,〓 made in China, shows that their ergo-temperatures vary with their components.

环氧树脂涂层能有效地改善塑料粘结NdFeB永磁复合材料的耐蚀性，延缓锈蚀的发生，特别是致密的阴极电泳环氧树脂涂层对塑料粘结NdFeB永磁复合材料具有更为优异的防腐作用；国产的NdFeB磁粉（NFZ-1和Nd〓Fe〓B/α-Fe、〓）制成的塑料粘结永磁复合材料的温度稳定性的研究表明〓纳米晶合金制成的塑料粘结永磁复合材料使用温度应不超过100℃，NFZ-1制成的塑料粘结永磁复合材料可在120℃以下工作，Nd〓Fe〓B/α-Fe制成的塑料粘结永磁复合材料可在140℃以下工作。

The thermobaric explosive which is similar to PBXs is the new generation of FAE. By analyzing the PBX theory, the F rubber, D ruber and H ruber were chosen as binders, and the calcium stearate, ceresin and graphite were chosen as desensitizing agents. One kind of binders and two kinds of desensitizing agents were selected to form a system for coating the thermobaric explosive. Then their shaping performance and the mechanical sensitivity were compared.

固体温压炸药是液固复合云爆剂的发展型，类似于压装高聚物粘结炸药，所以对PBX的理论和经验进行了研究，选择粘结剂为F橡胶、D橡胶、H橡胶，钝感剂为蜡类钝感剂、硬脂酸钙、石墨，选取一种粘结剂和两种钝感剂，组成三元粘结-钝感体系，通过合理的包覆工艺对主体温压炸药进行包覆，比较它们的成型性能和机械感度。

Reliability and security are critical for acrylic,pure acrylic and chlorobutyl latex modified mortars applied in actual bonding civil engineering.In order to solve these problems,varied bonding curing systems were adopted and a case that simulated the actual bonging project was implemented.

针对丙烯酸、纯丙和氯丁3种聚合物乳液砂浆在实际工程中粘结应用的可靠性和粘结性差的问题，研究了各种粘结养护制度下的粘结性能和本体抗压抗折强度，同时通过拟工程应用的室外实验来评估粘结可靠性。

In order to enhance itscaking intensity, often greatly increases the cement the amount used,because its lime sand quite big (generally is 1: 1), this kind ofcaking mortar existence very big flaw, like brittleness oversized butflexibility insufficient, its compressive strength higher, but anti-booklet intensity and caking intensity lower and so on, the elasticitycoefficient higher distorts the ability to be very inferior.

为了提高其粘结强度，往往大大增加水泥的用量，由于其灰砂比较大(一般为1∶1)，这种粘结砂浆存在很大缺陷，如脆性过大而柔韧性不足，其抗压强度较高，而抗折强度和粘结强度较低等，弹性模量较高而变形能力很差等。

The results of these analysis show that the initial stress of steel stiffened girder has a significant impact on maximum vertical displacement, maximum tensile stress of pavement surface and maximum shear stress of binding course; the deformation of steel stiffened girder has a significant impact on shear stress of binding course; heavy-vehicle load can increase each control index rapidly; the horizontal force of vehicle load has a significant impact on longitudinal tensile stress of pavement surface and longitudinal shear stress of binding course.

分析结果表明钢加劲梁初始应力对铺装层表面最大竖向位移、铺装层表面最大拉应力与粘结层最大剪应力均有显著影响；钢加劲梁变形对粘结层剪应力影响显著；重车荷载将使各控制指标均急剧增加；车辆荷载的水平力则对铺装层表面纵向拉应力与粘结层纵向剪应力影响显著。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐