1.
Dust and fog protected under sealed condition, IP44.
独特的密封式设计，防尘、雾，防护等级IP44。
2.
Classification of degrees of protection provided by enclosures for luminaires
GB7001-1986灯具外壳防护等级分类
3.
Study On The Status Of Know Rate Of Hepatitis B And Occupational Control Behavior In Medical-Staff
二、三级甲等医院医护人员乙肝防治知识及职业防护技能调查
4.
The Stability Analysis & Protect Designing for High Side Slope of Superhighway in Mountain Area;
山区高等级公路高边坡稳定性分析及防护设计
5.
Study on the Designing Method of the Composite Materials Guardrail of Highway;
高等级公路复合材料防撞护栏设计方法研究
6.
Application of Information Resource Panning Technology in Multi-Level Protection
等级防护下信息资源规划技术应用研究
7.
Ecological Protection of Expressway Soil Slope
高等级公路土质边坡生态防护技术初探
8.
Research on Graded Network and Information System Security Defense Mechanism
等级化网络及信息系统安全防护体系研究
9.
Survey Research on Occupational Exposure and Security Protection of Nurses in Different Hospitals
不同等级医院护士职业暴露安全防护相关情况的调查
10.
Slope Stability Analysis and Ecological Protection Design of Classified Highway;
高等级公路岩质边坡稳定性分析和生态防护设计研究
11.
Dynamic Optimal Design and Integrated Control System of Cut Slope on High-type Highway;
高等级公路路堑边坡动态优化设计及综合防护系统研究
12.
Causes of Early Damages on High-class Highway Pavement,its Preventive Measures and Maintenance
高等级公路路面早期破坏原因及预防性施工和养护对策
13.
Everyone knows that an SPF rating of 60 provides double the protection of SPF 30 - or does it?
每个人知道，一个60防晒系数评分等级提供加倍防晒系数30的防护-或做它？
14.
Survey on Occupational Protection Cognition and Behavior of Auxiliary Nursing Staff Members at 4 Class Ⅲ Grade Ⅰ Hospitals in Guangzhou
广州市4所三级甲等医院护理辅助人员职业危害认知与防护状况调查
15.
The grade of ACQ antiseptic material is due to the class of the wood.
（一）ACQ防腐处理材等级由锯材的不同等级决定。
16.
To fortify or conceal with a mound.
用土石堆设防用土堆等防护或隐蔽
17.
Analysis of Boss System's Security Level
省级通信BOSS系统安全等级保护的定级研究
18.
Simulation and Modeling of ESD Protection Device on Circuit Level;
ESD防护器件的电路级仿真及建模