Affected by electromagnetism and structure, the rotor shaft of big length to diameter ratio high power density asynchronous motor shows low intensity and bad rigidity.
大长径比高功率密度电机受电磁及结构因素的影响,转轴的强度低,钢度差。
But that results the high void ratio, low density, hardness, and quality bulk material.
但是采用此方法所制得的块体材料致密度小,孔隙率高,硬度值较低,性能较差。
The erasable optical disk with high recording density, high stability, high data transfer rate, high carrier-noise ratio and low error rate arc the main points in the research and development.
当前的研究与开发的重点是具有高记录密度,数据传输速率快、稳定性好、载噪比大和误码率低的可擦型光盘存储材料。
应用推荐