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- At last, it analyzes and evaluates water quality in Liaohe area and Tieling area and issues some advice how to protect surface water resources. 对辽河流域铁岭段水质现状进行分析评价，并对辽河铁岭段的地表水水资源保护提出建议。
- At last,it analyzes and evaluates water quality in Liaohe area and Tieling area and issues some advice how to protect surface water resources. 对辽河流域铁岭段水质现状进行分析评价,并对辽河铁岭段的地表水水资源保护提出建议。
- The critical energy is the system energy which just makes the post-fault trajectory be tangential to the protection surface of the key lines. 该临界能量为故障后系统轨迹刚好与关键线路上相应保护动作面相切时系统所获得的能量。
- They netted the fruit trees to protect them from birds. 他们用网覆盖住果树以使其免遭鸟害。
- The gas bubbled to the surface of the water. 气体变成气泡升上水面。
- The surface of the liquid gradually crusted over. 液体表面渐渐地结了一层皮。
- A breeze ruffled the surface of the lake. 一阵微风吹皱了湖面。
- A wave broke across the surface of the pool. 一个波浪从池水表面掠过。
- The calm water surface is very much like a mirror. 那平静的水面十分象一面镜子。
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
- He is honest only on the surface. 他只是表面诚实而已。
- How can we protect our computer files? 我们怎样才能保护我们的计算机数据？
- She was engaged in protecting wild birds. 她致力於保护野生鸟类的工作。
- A film of mucus and bacteria on a tooth surface. 齿菌斑牙齿表面一层粘液和细菌的膜
- The hard outer portion or surface area of bread. 面包皮面包的表面区域的硬皮
- A plastic cover protect the computer. 这台计算机由一个塑料防护罩盖着。
- It's our duty to protect the saplings. 保护树苗是我们的责任。
- Surface mail takes longer than airmail. 普通邮件比航空邮件慢。
- The surface of the lake is quite still. 湖面相当平静。
- A piece of armor protecting the throat. 护喉甲用来保护咽喉的盔甲
