The situation of measurement and analysis the surface appearance dimension precise and internal quality of X52 pipeline steel produced by Panzhihua Iron and steel Group Co.
介绍了检测、分析攀钢X52管线钢外观尺寸精度及内部质量的情况。
An introduction was made to volumetric changes of castings and dimension changes of mold cavity occurring during liquid cooling and solidification of nodular iron castings.
介绍球铁冷却、凝固过程中的体积变化以及型腔尺寸变化。
In combination with a real copper-iron deposit, some techniques and methods concerning the study of deposit modelling using three-dimension geological statistics were studied.
结合一个实际的铜铁共生矿床，对应用三维地质统计学方法研究矿床建模工作涉及的若干技术与方法。
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