unprotected crossing

用法例句

Check standard of protective equipment products quality for civil air defence

人民防空工程防护设备产品质量检验标准

infrastructure and service maintenance,application of industrial safety/protective equipment, and marketing.

基础设施的维护和服务的保持；工业安全和（或）防护设备的使用；营销。

and the Occupational Safety and Health (Personal Protective Equipment) Regulation on the provision and use of personal protective equipment.

以及《职业安全及健康(个人防护设备)规例》，就提供和使用个人防护设备订定条文。

Intervention for Safety Equipment Use of Motor Vehicles Drivers and Passengers;

机动车驾乘人员佩戴安全防护设备的干预研究

Management of Instruments and Equipment in Protective Equipment Testing Laboratories

防护装备检测实验室仪器设备的管理

protection of electronic equipment from shock and vibration

电子设备振动与冲击防护

Classification of electrical and electronic equipment with regard to protection against electric shock

GB/T12501-1990电工电子设备防触电保护分类

Research on Corrosion and Protection of Equipments in WSA Sulfuric Acid Unit;

WSA硫酸装置设备腐蚀与防护措施研究

The Pivotal Study of Satellite Carried Electronic Equipment Irradiation Protection Theory;

星载电子设备辐照防护关键技术研究

Satellite Carried Electronic Equipment Box Irradiation Protection Theory Study;

星载电子设备机箱辐照防护理论研究

Protection Packaging Design of Special Equipments of River-crossing and Bridging

渡河桥梁装备特型器材防护包装设计

Research on Dynamic Predictive Maintenance Policy Based on System Reliability

基于设备可靠性的动态预防维护策略

Electromagnetic Radiation and Protection in Electronic Proving Group

电子设备测试场中的电磁辐射与防护

Study on Railway Shunting Safety Protection Measures and the Corresponding Equipments

调车安全防护办法及设备实现的探讨

Experience of Preventive Maintenance of Medical Equipment

开展医疗设备预防性维护工作的体会

The Corrode and Protect of Mechanical Equipments and Infrastructures

浅谈机械设备和基础设施的腐蚀与防护

fireman general protection equipment

消防员常规防护装备

fireman special protection equipment

消防员特种防护装备