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In present thesis, the mixed-mode interlarninar fracture characters of composite laminate T300/5405 on hygrothermal conditions were investigated using new mixed- mode flexure specimens.

本文采用混合型挠曲试件，对T300/5405单向板在湿热条件下的混合型层间断裂特性进行了试验研究，测试了湿热环境下试件的临界能量释放率，得到了相应的混合型层间失效判据。

By some typical numerical examples , the effects of delamination , hygrothermal and the progressive failure on the stability behaviors of the AGS plate and shell are discussed. The numerical results indicate that the effects of delamination , hygrothermal and progressive failure on the stability of composite AGS structures can not be neglected when the above factors result in a jump of the buckling mode.

通过典型算例讨论了湿热环境、累积失效及分层损伤等因素对复合材料 AGS结构稳定性的影响，数值结果表明当上述因素导致结构的屈曲模式发生突变时，其对 A GS结构稳定性能的影响是不容忽视的。

The sliding wear behaviors under lubricating of hypoeutectic, eutectic and hypereutectic Al-Si alloys are investigated.

研究了亚共晶、共晶、过共晶 Al-Si 合金在润滑条件下的磨损行为，探讨了三类合金的磨损失效机理，得出提高Si含量是提高 Al-Si 合金耐磨性的有效途径。

The results in this paper are concluded as follows:(1) Rolling contact fatigue has been used to examine the interfacial reaction products and study the mechanism of ion beam intermixing effect on the adhesion of Cr-N coating on steel by IBAD.

对多次冲击条件下薄膜的失效抗力及其与薄膜力学性能之间的关系进行了初步探讨，得到如下结果：（1）用滚动接触疲劳法检测离子轰击导致的界面反应产物和研究离子束共混对钢基体上IBAD沉积Cr-N薄膜结合强度的影响本质，结果表明，滚动接触疲劳能有效地分析界面最薄弱位置和评估界面反应产物，滚动接触疲劳引起的剥落可作为研究界面反应产物对结合强度影响的根据。

According to the anomalous effects of the test such as component deformation as a result of the repeated transverse impact,a fault elimination test method of equivalent simulation for cycling hammering is established,which adopts the theory of "equivalent actual response,and inequivalent actual stimulus".

在新型火炮增程弹药适配试验中出现引信异常失效，针对回收零件呈现受过多次横向冲击的变形等异常效果，建立了一种&等效实际响应，不等效实际激励&的等效模拟循环锤击故障排查试验方法。

In the end,this article put forward the formation mechanism of grain-boundary separation or intercrystalline cracking.

探讨了颗粒增强铝基复合材料发生晶界分离失效的形成机理。

On the basis of examination of the wear behavior and worn surface morphology of the coatings after abrasive wear and erosion wear respectively, and the enhancing mechanisms of interlamellar bonding caused by unmelted carbide particles during deposition, the effects of the microstructure on its performance are discussed.

其次， 在分析研究了涂层磨拉磨损和冲蚀磨损失效形貌以及未熔化碳化物颗粒对涂层层间结合强化机理的基础上，探讨了磨损机制、磨损模型的建立及涂层结构对磨损性能的影响规律。

This paper presents research on the intersystem prediction and analysis of electromagnetic compatibility to the radio systems positioned by the geographical longitude and latitude coordinate system and the elevation system.

本文对处于陆上局部区域内的、以经纬度地理坐标系和高程系进行定位的无线电系统间的电磁兼容性预测进行了研究，以对系统间的相互干扰情况作出预测，给解决局部区域中无线电系统间相互干扰问题的方案提供支持，以避免在系统布置、安装完成之后出现相互干扰情况而使系统性能下降，甚至失效，造成资金和时间的浪费。

HSBC's offer to buy a 51 per cent stake in KEB from Lone Star, the US private equity group, will expire on April 30 if it has not been approved by regulators.

如果未能获得监管机构批准，汇丰提出从美国私人股本集团孤星手中购入韩国外换银行51%股权的要约将于4月30日失效。

HSBC's offer to buy a 51 per cent stake in KEB from Lone Star, the US private equity group, will expire on April 30 if it has not been approved by regulators.

假如未能获得监管机构批准，汇丰提出从美国私人股本集团孤星手中购入韩国外换银行51%股权的要约将于4月30日失效。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。