边缘接头

Reducing bond temperature and diminishing bond time are in favor of the mollification of interface stresses.

分析表明，对接头有害的较大的残余应力区域分布在膨胀系数较小母材靠近焊缝附近的地带，而残余应力的最大值出现在其界面脆性相及焊缝附近靠近接头边缘的微小区域，降低连接温度、减少连接时间有利于减小接头残余应力，优化接头的界面应力状态。

For beams employed in any span between supports there shall be no splice in the middle one-fourth of the span nor in the one-eighth of the span nearest any support, nor closer than 1200 mm to the edge of any support/joint, as applicable.

在任何支撑点的跨距内使用的梁，在跨距中间的四分之一位置上，不得有拼接口，在靠近支撑的八分之一跨距位置上，不得有拼接口。在应用上，接口与支撑/接头边缘的距离不得小于

When the elastic modulus is high, stress and strain are mainly concentrated at edge of the overlap region, while those in weld spot zone are relatively even; when the elastic modulus is low, stresses in the adhesive layer are small while stresses are concentrated to a certain extent at edge of the weld spot.

分析发现，胶粘剂弹性模量对接头中应力应变分布的趋势有明显影响，胶粘剂弹性模量高时，搭接区边缘附近区域应力应变高，焊点区应力应变值相对较小；弹性模量低时，焊点边缘处存在一定的应力集中，胶层中应力较小。

Results show that when improving spot pitch in weld bonded joints with high elastic modulus adhesives, stresses in weld spot zone are decreased while stresses and strains at edges of overlap region are increased slightly. For the joints with low elastic modulus adhesives, both stress concentration degree at the weld spot and the shear strain at edges of overlap region are increased with the spot pitch increasing.

结果表明，高弹性模量胶粘剂胶焊接头中，增大焊点间距，焊点区应力减小而搭接区边缘胶层中的应力应变略有增大；低弹性模量胶粘剂胶焊接头中，焊点处应力集中程度和搭接区边缘胶层中的剪应变值都随焊点间距的增加而增大，增加焊点间距，两种接头的胶层断裂强度都将降低。

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。