试验研究了X70管线钢在模拟土壤介质中，循环载荷下的裂纹扩展特性和宏观规律。
The crack propagation characteristics of X70 pipeline steel in the synthetic soil solution under cyclic loading are investigated.
由于海底管道海底恶劣的环境条件以及海底管线独特的铺设方法，保温材料的受力条件复杂，本课题对其力学特性进行了深入研究。
As the environment condition is very unfavorable and the installation method of pipeline is unique laying method, the insulated layer load condition is complex.
介绍了一种利用MOS管线性区特性实现满摆幅输入的跨导器。
A rail-to-rail input range transconductor implemented by MOS transistors linear region characters is presented.
简要介绍了国内管线钢的组织分类及其特性要求，并对国内管线钢目前应用标准情况进行了分析研究。
Introduce the internal pipeline steel structure and characteristic, and analysis the present situation about the internal pipeline steel standard.
研究了不同腐蚀介质中及加载频率下x 6 0管线钢的腐蚀疲劳裂纹扩展特性。
The characteristics of corrosion fatigue crack propagation of X60 pipe steel at different loading frequencies and in different corrosion media were studied.
无论改变泵出口管线结构还是改变泵吸入口管线结构，都会对单螺杆泵的特性产生一定程度的影响。
Whether to change the pump outlet pipe structure or to change the pump intake pipe structure, and will feature a single-screw pump have a certain extent.
试验研究了X70管线钢在模拟土壤介质中，循环载荷下的裂纹扩展特性和宏观规律。
The crack propagation characteristics of X70 pipeline steel in the synthetic soil solution under cyclic loading are investigated. The macroscopical rules of the crack propagation are analyzed as well.
试验研究了X70管线钢在模拟土壤介质中 ，循环载荷下的裂纹扩展特性和宏观规律 。
The electrochemical behavior of X70 pipeline steel in a synthetic near neutral soil solution is investigated.
通过管中心和其它管线的速度变化趋势，以及圆管径向的速度分布，描述了流场的整体流动特性，揭示了非牛顿流体管道流的速度过冲和振荡现象。
They can easy show the behaviors of the flow in the whole cube, reveal the phenomenon of locity overshooting and damping oscillation of the flow.
通过管中心和其它管线的速度变化趋势，以及圆管径向的速度分布，描述了流场的整体流动特性，揭示了非牛顿流体管道流的速度过冲和振荡现象。
They can easy show the behaviors of the flow in the whole cube, reveal the phenomenon of locity overshooting and damping oscillation of the flow.
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