韧

Results show that chemical reaction between additives Al2O3 and Y2O3 accelerated the liquid phase sintering and the formation of the YAG non-crystalline,which was beneficial to improving fracture toughness of Cf/SiC composites.Higher sintering temperature resulted in the strongly bonded fiber/matrix interface.Fiber push-off,crack deflection and grains bridging are main toughening mechanisms of silicon carbide cera...

结果表明：烧结过程中，烧结助剂Al2O3、Y2O3之间发生化学反应，促进液相烧结，形成晶界间的次晶相YAG(3 Y2O3.5Al2O3)，有利于提高复合材料的断裂韧性；在较高烧结温度下，碳纤维、烧结助剂与基体间发生反应，形成较强结合界面；纤维拔出、裂纹偏转和晶粒桥联是碳化硅陶瓷的主要增韧机制。

The effect of content of SiC nano-powders on the microstructure,mechanical properties and wear resistance of nodular cast iron was investigated.

采用改性纳米SiC粉体对球墨铸铁进行了强韧化处理，研究了不同的纳米SiC粉体加入量对球墨铸铁的微观组织、力学性能以及耐磨损性能的影响。

In the region with large-scale equipment and large water-quenched depth, HMS cannot meet some needs.

在大型设备、韧化厚度大的领域中，常规高锰钢有时不能满足需要。

Although be to receive fund, if want money with the form of minatory the other side, be suspected of extortionate, if be the other side,take money actively to try to square Liu Ren, that should be not talked additionally.

虽然都是收钱，如果以威胁对方的形式要钱，就涉嫌敲诈，如果是对方主动拿钱来试图摆平刘韧，那就另当别论。

The conclusions are: The sonic velocity determined by the material's properties is the upper limit of the crack velocity; Bridging fibers plays a key role in increasing the composite's toughness and stopping the crack's propagation; The semi-infinite crack propagating in infinite region with the fiber bridging traction action is equal to the semi-infinite crack propagating in strip.

结论有：(1)由材料性能决定的音速是裂纹传播速度的上限；(2)桥联纤维在增韧复合材料和组织裂纹扩展中起了关键作用；(3)受桥联纤维力作用的半无限长裂纹在无限域中扩展等效于半无限长裂纹在带域中扩展。

By means of analysis of microstructure and measuring of impact toughness and hardness,and verification by real manufacture and application,the Si-Mn steel with rare earth and boron complex modification is better than traditional high Mn steel to produce tractor track guard in the wide range of temperature and the low cost and long life.

通过微观组织分析、冲击韧度、硬度等力学性能的测定、实际生产和装车试验证实，采用稀土-硼复合变质的SiMn钢代替传统高锰钢生产拖拉机履带板，不仅使用温度范围广，而且成本低，寿命高，具有明显的经济效益和社会效益。

In this paper we have studied four different Methods of heat treatment for CrWMn tool steel.

本文对于CrWMn冷作模具钢的4种不同预处理方法，对它们的碳化物粒子尺寸和分布、钢的奥氏体晶粒度大小及强韧化效果进行了对比。

All raw materials are import from Japan, Israel, and after the many working procedure for finalize the design, waxing and so on, any more applying specially slip-materialto amplify softly and tenacity for thread quality, more decrease the thread cutter opportunity.

而在原料上则经过定型、上油、上腊等工序，再涂上特殊滑料以增强线质柔软及韧力，使它难使缝纫较厚之皮具及各种皮具类制品操作畅顺，更减少断线机会。

But the only virtue of use to her in the flower of her twenty years was the strength of her character when the family discovered that she was mad with love for the young and haughty telegraph operator from Aracataca.

她有着种种美德，但是在她二十来岁、青春如花开放时，对自己能有所帮助的就只有她个性的强韧：那个时候，家人发现她爱上了一个来自Aracataca、目中无人的年轻电报员，爱得要发狂。

COMFORTABLE FIT: Brahms' unique design and special spring temper metal core with protective coating, adjusts easily to fit every nose.

佩戴舒适：Brahms的独特设计及带有保护膜的特殊弹簧韧度金属芯，可以轻松调节，以适合每个鼻形。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。