The application of hydraulic proportioning valve in mould oscillating system is a new technology which can take the place of traditional mechanical oscillating system.
液压比例伺服阀在结晶器振动方面的应用，是一种新型的结晶器振动技术，可以取代传统的机械式振动装置。
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The valve is allowed to move vertically and oscillating rotary motion is possible.