防: provide against; defend agai ...蠢: wriggle磺: sulphur防蠢剂: eulan防唇裂油膏: lip salve防磁: waterproof, shock-resistant and antimagnetic防垂螺栓: sag bolt防磁的: antimagnetic防垂吊杆: sag rod; sag tie防磁的,抗磁扰的: antimagnetic防串话环: crosstalk damping rings防磁钉: non magnetic shim; non-magnetic shim; residual pin防喘装置: surge-preventing system
