The fracture of a rail was analyzed by means of metallographic microscope, SEM and EDS.

Then the methods of image segmentation for metallographic analysis are introduced.

针对金相图像分割中存在的问题,提出了两步分割的图像分割方法.

Metallographic method is used to analyze the characterization of surface cracking of the geared.

采用金相分析方法分析了齿座表面裂纹的性质和产生原因.

This paper summarizes the construction principle, resolution power and amplification about the system of compuer-metallographic microscope.

概述了计算机 - 金相显微镜系统的建立原则 、 系统的分辨率和放大倍数.

In metallographic sample preparation process, specimens are polished with the polishing process multi-channel essential.

在金相试样制备过程中, 试样的磨光与抛光是多道必不可少的程序.

The optimal technological parameter was obtained by laser cladding experiment and metallographic structure analysis.

通过熔覆试验和金相组织分析,获得了最佳工艺参数.

Can do a variety of chemical composition analysis, physical performance test and metallographic analysis.

可做多种化学成分分析 、 物理性能试验及金相分析.

The strain of the proeutectoid ferrite in hypoeutectoid steel drawing measured and analyzed by quantitative metallography.

采用定量金相法分析计算了亚共析钢拉拔变形中先共析铁素体应变量.

The metallography samples fabricated by the vacuum pressure impregnation resin method are introduced in detail.

详细介绍了真空浸渍树脂法制备金相样品的制备过程.

Based on the system, the application of computer in metallography technology is discussed.

以该系统为基础, 论述了计算机在金相技术中的应用.

Polonium is a highly radioactive element and a metalloid.

钋是高放射性的元素,金属.

Metalloid mine product already became our country's important exit to achieve collect goods.

非金属矿产品已成为我国重要的出口创汇商品.

Objective To study the role of matrix metalloproteinase-2 ( MMP 2 ) in rat pulmonary fibrosis.

目的　研究基质金属蛋白酶2 ( MMP2 ) 在肺纤维化中的作用.

And then it was found that PAPP-was a zinc-binding matrix metalloproteinase associated with insulin-like growth factor.

后来发现它是一种与胰岛素样生长因子相关的锌指超家族中的金属螯合蛋白酶.

Objective : To investigate the expression of matrix metalloproteinase-9 ( MMP-9 ) and GD-147 in human esophageal squamous cell carcinoma ( ESCC ).

目的: 探讨基质金属蛋白酶9 ( MMP -9 ) 和CD -147 在食管鳞状细胞癌的表达及其与肿瘤浸润转移的关系.

Objective To investigate the expression of matrix metalloproteinase 2 ( MMP 2 ) mRNA and protein in gastric cancer.

目的探讨基质金属蛋白酶?2 ( MMP?2 ) mRNA及蛋白在胃癌中的表达.

Work experience of manufacture for metallurgic equipments will be a plus ; Preferably with driving licence.

有冶金设备制造经验和驾驶执照者优先考虑.

Gas for metal cutting in metallurgic al industry is presented.

介绍了冶金工业中金属切割燃气情况.

Foam slag with good metallurgic performance and enough thickness can be got by several operating measures.

控制好几个操作参数,能得到冶金性能良好,渣层厚度足够的泡沫渣.

The accurate results can be obtained in the analysis of metallurgic production by controlling these factors.

在分析过程中,通过控制相关因素,可应用光电直读光谱准确测定钢中硫.

Also be used for metallurgical industry, the new flux, heating agent.

也可用于治金工业的新型保护渣 、 发热剂.