Through the process test, wearing test and microstructure observation and analysis, the convention performance of oxygen-acetylene flame spray welded layer is studied.
通过工艺试验、耐磨试验和显微组织观察分析，研究了氧-乙炔火焰喷焊层的常规性能。
The mechanical properties and fracture process observation was studied by in-situ tensile test of 93w-y2o3.
研究93 W - Y 2o 3合金的力学性能，并通过扫描电镜原位拉伸试验观察93W - Y 2o 3合金的断裂过程。
Through the microstructure observation and hardness test of extrusion specimen, the grain refinement effect of AZ31 magnesium alloy under ECAP process was studied.
对挤压后的试样进行显微组织观察、硬度测试，研究等通道挤压工艺（ECAP）对AZ31镁合金的晶粒细化效果。
Test This paper mainly introduces the process and bridge settlement observation in observation of the need for attention to some problems.
本文主要介绍了桥梁沉降观测的流程及在观测中需要注意的一些问题。
Test This paper mainly introduces the process and bridge settlement observation in observation of the need for attention to some problems.
本文主要介绍了桥梁沉降观测的流程及在观测中需要注意的一些问题。
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