The structural characteristics, properties, main preparation methods of bulk nanocrystalline materials, and their application and development prospect in material engineering are introduced.
介绍了大块纳米晶材料的结构特性、性能、主要的制备方法以及纳米晶材料在工程中的应用前景。
How to control the application of circulation materials and ensue the high quality of engineering became a main issue in high rise house with full cast-in-place shear wall construction at present.
在全现浇剪力墙高层住宅施工中，如何控制周转材料的使用并保证工程创优，成为目前项目施工中面临的一个主要课题。
Problems existed in simulation scale-up, engineering design, equipment manufacture and materials properties are main causes for the slow technical progress of the ammonia industry in China.
模拟放大、工程设计、设备制造和材料性能的问题，是我国合成氨工业技术进步缓慢的主要原因。
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