研磨工件需要有精确尺寸及热处理膜、去黑膜、去黑头、倒角、表面精铸造工件磨光之用。
Especial finished parts need precision and have size heat treat film available for film removal, debarring of casting parts.
将该控制模型应用于计算机控制系统，在小型电磁铸造设备上可以精确、稳定的控制结晶器内液位。
When the model is applied to computer control system, the liquid height in the mold is controlled stably and accurately in micro-type electromagnetic casting equipment.
由于反重力铸造过程的时滞性、不确定性、复杂性，难以建立精确的数学模型。
It is hard to build a precise math model for counter-gravity casting process for its time lag, uncertainty and complexity.
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