方形兜孔钢保持架因为钢架硬度高、拉削难度大等特点，始终采用线切割加工方兜孔。
The working for square pockets of turning steel cages having high hardness and difficult to broach is conducted in linear cutting.
应用结晶器非正弦振动技术可以降低结晶器摩擦阻力，减少粘结性漏钢，同时大幅度降低高拉速时的结晶器振动频率。
The non-sinuous oscillation of the mold is used to reduce the mold friction force and stick type breakout, and to lower the oscillation frequency for high speed casting.
研究了高锰奥氏体钢在77K下的抗拉性能、形变组织和断裂特点。
The tensile properties, deformed microstructure and fracture at 77K in high-Mn austenitic steels have been investigated.
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