研究了第二代单晶高温合金DD6长期时效后的拉伸性能。
The investigations of tensile properties of the second generation single crystal superalloy DD6 after long term aging at elevated temperature were presented.
在长期时效中，合金存在不同类型碳化物之间的转变，较低温度时向M _ (23) C_6型碳化物转变，较高温度时向MC型碳化物转变。
Different precipitation types of carbide in the alloy are transformed in long time aging treatment, turn to M_ (23) C_6 type at lower temperature and turn to MC type at higher temperature.
花岗石平台（花岗石平板）经长期天然时效，组织结构均匀，线胀系数极小，内应力完全消失，不变形。
A granite platform (Granite Flat Panel) was a long-term natural aging, organizational structure, uniform, linear expansion coefficient is extremely small, internal stress disappear, not deformed.
软土隧道地表长期沉降特性与隧道的渗透性以及周围土体的时效特性密切相关。
The drainage condition combining with the time-dependent properties of the surrounding soil played an important role in the evolution of long-term surface settlement over tunnels in soft soils.
研制出一种两级磨料新型孕镶金刚石钻头，该种钻头解决了时效与寿命不能同步提高这一长期困扰钻头研制者的难题。
A new type of impregnated diamond bit with two sorts of diamond abrasives has been developed, which can improve both penetration rate and service life simultaneously.
最佳爆破参数的获得通常是靠长期的经验积累，其时效性较差。
Usually an acquirement of optimal blasting parameters lies in the back-ground of long experience, but these parameters are poor in time effectiveness.
同时效率也包括避免受到短期和长期伤害，这也是为什么跑酷的非官方格言中提到：存在并持续。
Efficiency also involves avoiding injuries, short and long-term, part of why parkour's unofficial motto is to be and to last.
两者一起使用时效果最佳，因为BWG能使分散性能在长期的仓储和运输中保持良好状态。
Superior results occur when they are used together, since BWG protects against dispersibility loss while aging in warehouse and during shipment.
两者一起使用时效果最佳，因为BWG能使分散性能在长期的仓储和运输中保持良好状态。
Superior results occur when they are used together, since BWG protects against dispersibility loss while aging in warehouse and during shipment.
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