The present paper systematically checks and examines as well as analyzes causes to the cold-bended crack in the hot rolled steel plate Q345 by microscope, X-ray and Electron Probe Micro-analyzer.
利用金相显微镜、X射线衍射仪及电子探针等对Q 345热轧钢板因冷弯产生的裂纹进行了系统检验分析。
The paper analyzed the design defect of Model 2550 micro oxygen analyzer, introduced the modification solution and design principle and attention rule.
分析了原2550型微量氧分析仪采样系统设计缺陷，阐述改造方案和设计原理及使用注意事项。
The test results show that our micro biochemical analyzer can meet the requirement of clinic use.
试验结果表明，该微型生化分析仪器已达到临床应用的要求。
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