radio life-saving appliance 无线电救生设备
personal life-saving appliance [水运] [安全] 个人救生设备
existing life-saving appliance 现有救生设备
cermet of life-saving appliance 救生设备证书
testing of life-saving appliance 救生设备试验
approval of life-saving appliance 救生设备的认可
evaluation of life-saving appliance 救生设备的评定
sub-committee on life-saving appliance 救生设备小组委员会
应用推荐