涤纶;的确良英释中释na type of cloth that is not made from natural materials
1 These practices shown that the phase-lockd loop has made it possible to offer a stabilized frequency source for high speed spinning of the POY Dacron filament..实践表明,它解决了涤纶长丝高速纺丝变频电源的频率稳定度问题。
更新时间:2025-02-22 15:07:53