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The results show that the microstructure of Fe-28Al-5Cr-0.06B alloy refines by using stainless steel mold cooling method, the tensile strength of alloy increases 29 MPa, the hardness increases slightly but the elongation decreases a little at the same condition except, the impact fracture transform intercrystalline fracture into intercrystalline and transcrystalline mixed fracture.

结果表明：采用不锈钢金属型冷却，可以细化合金的铸态组织；在其他工艺相同的条件下，合金的抗拉强度提高了29 MPa，硬度有所增加，伸长率稍有下降；合金的冲击断口由沿晶断裂向沿晶＋穿晶混合型断裂转变。

The tensile tests show that the yielding strength and fracture strength increase with increasing Co content. The fracture mechanism of martensite phase is transcrystalline fracture, and the γ phase is gliding fracture, it proves that the γ phase improves the toughness of experimental alloys

断口观察发现，基体相为解理断裂，小尺寸的γ相被裂纹绕过或被整体拔出，大尺寸的γ相被拉长、撕裂或整体拔出，说明γ相有利于改善合金韧性，但增韧效果受到γ相尺寸的影响

CL which can be detected during tensile testing of unaged polyami-de and UV-irradiated polypropylene specimens, has been found to be an effect of thermally unstable hydroperoxides decomposing due to stress-induced adiabatic heating, which after necking is localised to the travelling neck shoulders.

在对物理尼龙和紫外线照射过的聚丙烯样件的拉伸测试过程中，采用化合光对其进行检测，可以发现一种不稳定的热效应产生的氢分解。这是由于在受拉伸颈部的轴肩局部位置，因应力作用而产生的绝热加热。

CL which can be detected during tensile testing of unaged polyami-de and U-irradiated polypropylene specimens, has been found to be an effect of thermally unstable hydroperoxides decomposing due to stress-induced adiabatic heating, which after necking is localised to the traelling neck shoulders.

在对物理尼龙和紫外线照射过的聚丙烯样件的拉伸测试过程中，采用化合光对其进行检测，可以发现一种不稳定的热效应产生的氢分解。这是由于在受拉伸颈部的轴肩局部位置，因应力作用而产生的绝热加热。

It was discovered that tensile strength regularity varied with carbonated zone and half- carbonated zone and uncarbonated zone of the hydraulic carbonated concrete.3 Rusty fundamental of rebar is explained; Rusty rebar of the long-age hydraulic reinforced concrete that corrosion ratio is less than 6 percent is been mechanical test.

采用圆柱体横劈法测定了长龄期水工碳化混凝土的三个分区强度，揭示了此类水工混凝土碳化区、反应区和未碳化区的强度变化规律。

The experimental results are summarized as follows: the tensile strengh and bending strengh of steel fiber reinforced lightweight aggregate concrete can be improved significantly by the addition of steel fiber; to some extent ,the addition of steel fiber can also increase the compressive strength ,although little , it radically improves the compressive toughness , and the steel fiber reinforced lightweight aggregate concrete will not fall apart with cracks; with the increase of the volume fraction of steel fiber, the elastic modulus is also rising somewhat; Poisson's ratio is influenced little with the addition of the steel fiber and the effect regularity displays unconspicuously.

本文试验研究结果可归纳如下：钢纤维的加入能明显提高钢纤维轻骨料混凝土的抗拉强度和抗折强度；掺入钢纤维使钢纤维轻骨料混凝土的抗压强度有一定程度的提高，增长幅度不大，但抗压韧性却有很大改善，使钢纤维轻骨料混凝土裂而不散；钢纤维轻骨料混凝土的弹性模量随钢纤维体积率的增大有一定提高；泊松比受钢纤维的加入影响不大，规律性不明显。

The mathematic description of the void volume fraction evolution is modified and the parameters in the modified model were obtained according to the tensile test results of uncorroded material.

根据未腐蚀材料拉伸试验数据，回归给出改进的孔隙率演化模型中的参数值。

Firstly, based on the catenary cable element model, a new compatible equation which reflects the relationship between the unelongated cable length and its tensile foce, is put forward.

本文首先基于悬链线解析解推导了一种反映索原长和索力之间关系的索元协调方程式，以及适用于动力松弛法找形分析的索元弦向刚度表达式。

Using the compatible equation, the conversion between the cables unelongated length and its tensile force can be achieved rapidly and steadily in simple bichotomy method, even without iteration.

利用该协调方程式，无需迭代或仅采用简单的二分法便可以稳定快速地实现索原长与索力之间的换算。

Tensile strength and t- ear strength increased by 119%and27.4% compared to ungraft SBR Vulcanizates; The Tg of SBR ro- se after grafting and heat-resistence ability of SBR–g–is better than u- ngrafting SBR.

在获得接枝率高而且性能良好的SBR-g-的基础上，采用动态硫化法制备SBR–g–增容丁苯橡胶/聚氯乙烯热塑性弹性体（SBR/PVC TPV），研究SBR-g-对SBR/PVC TPV的增容效果。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"