The aerodynamical noise of vacuum couch roll is the major noise source of paper machine.
真空伏辊空气动力性噪声是造纸机的主噪声源。
This brick machine is a new type all-steel hard shaping vacuum extruder of our company.
该机是我公司研制开发的新一代组合型全钢硬塑真空挤砖机。
This brick machine is a new type all-steel hard shaping vacuum extruder of our company.
该机是我公司研制开发的新一代组合型全钢硬塑真空挤砖机。
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