The parallel blade damper is the ZD series damper. These dampers have been designed to provide long life, silent operation and require zero maintenance.
平行叶片风门是ZD系列风门。这些风门的设计使用寿命很长，运行安静，不需要进行维护。
The method can be used to calculate the vibration features of circular blades with friction damper, so it provided the foundation for designing the blade with friction damper.
该方法稍加推广即可研究循环叶片组的振动特性，为指导带缘板阻尼器叶片的减振设计奠定了基础。
8226; Product description: Automatic fire damper blade roll forming machine run by chain drive types, it can suit different production requirement.
产品说明：全自动叶片成型设备墙板链条式传动，可以适合不同企业的生产要求。
8226; Product description: Automatic fire damper blade roll forming machine run by chain drive types, it can suit different production requirement.
产品说明：全自动叶片成型设备墙板链条式传动，可以适合不同企业的生产要求。
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