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The effects of RE-Nb on microstructure and mechanical properties of cast 3Cr2MoNiWV hot-work die steel were investigated by SEM, TEM and AJ-1 electronic tensile test equipment.

用扫描电镜、透射电镜和万能电子材料拉伸试验机研究了RE—Nb对铸造3Cr2MoNiWV热锻模具钢组织和力学性能的影响。

The mechanical properties of the modified material were tested, and the thermal stability of the modified EP blend was also investigated by TG. The results indicate that the graft copolymerization between PU and EP effectly inforces the miscibility of the PU/EP system. Compared with the properties of pure EP, the impact strength and tensile strength of the PU/EP with high thermal stability are markedly enhanced, and the fracture surface of the PU/EP system displays tough fracture features.

研究结果表明：PU和EP分子链之间存在着化学接枝反应，能有效地改善PU/EP体系中PU和EP分子间的相容性及相互贯穿；与TDE-85与E-51的混和环氧树脂比，PU改性TDE-85与E-51的混和环氧树脂仍然具有很强的耐热性能，并且冲击强度、拉伸强度均获得显著提高；PU/EP体系断口裂纹呈明显的韧性断裂特征，说明TDE-85与E-51的混和环氧树脂PU改性增韧效果明显。

The mechanical properties of the rolled and subsequently heat treated isotactic polypropylene were measured by the tensile tests.

借助拉伸试验对轧制和退火后的等规聚丙烯进行了轧向及横向上力学性能的研究。

In the process of impact of abrasive jet on rock, resulting dynamic stress plays an important role in rock destruction. The stress wave resulted makes local rock tensile and shearing, then makes rock destructed. In the conditions of some hypotheses, the mechanical model that rock is applied by stress wave, i.e. jet wave basic equations, are set up by wave theory, and the formula of the maximum normal stress resulted by stress wave is deduced according to known boundary conditions.

描述了岩石材料在磨料射流的冲击下破坏的主要原因，分析了应力波就是岩石局部受到拉伸和剪切并最终使岩石发生破坏的根本因素，在这一假设的前提下采用波动理论建立了岩石受应力波作用的力学模型即射流波动的基本方程，在已知的边界条件下推导出了由波动引起的最大正应力的计算公式。

The ambient-temperature tensile strength of the joint brazed with Cu-Co-Ti filler metal is slightly higher than that brazed with Cu- Ti filler

两种接头的的室温拉伸强度均较低，但Cu-Co-Ti钎料接头的强度高于Cu-Ti钎料接头。

ZL117, LF21 and LY16 aluminum alloys were welded using the as-cast rod by TIG welding. The tensile properties, hardness and wear resistance of the wire and welded joint were tested.

以L401为焊料，用TIG对焊LY16、 LF21，堆焊ZL117，分析了对焊接头的硬度、抗拉强度和堆焊层的耐磨性。

The instruments widely used in practice for the determination of the theological properties of dough can be divided into recording dough kneaders and tensile testers.

在实践中广泛用于确定面团热力学特性的仪器可以分成纪录面团混合机和张力测试仪。

The anti-tensile ability of lap joint was greater than its anti-shearing ability, and its anti-shearing ability was mainly decided by fusion width between two plates.

搭接接头的抗拉伸强度比抗拉剪强度大，其抗拉剪载荷的能力主要由两板间的熔接宽度决定。

Test methods used for coatings on metals are: peel adhesion or "tape testing; Gardner impact flexibility testing; and adhesive joint testing including shear (lap joint and direct tensile testing.

C% E4 B( W a Q 测试方法用在金属涂层上的有：附着力的剥落或胶带测试。加德纳影响测试的弹性和附着力结合测试，包括剪切力和拉伸试验。

The particle size and flow behavior of the latexes,dynamic mechanical properties,tensile behavior,and water resistance of the copolymers,as well as the nucleation mechanism of latex particles were investigated.

对乳胶粒粒径大小、乳液流体力学行为、共聚物的动态力学性质、拉伸行为及耐水性进行了研究，并对乳胶粒的成核机理进行了探讨。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。