NL-1 is a naw type of corrosion resistant low alloyed ductile iron.
研制了一种新型低合金耐盐卤腐蚀的球铁材料（代号NL-1）。
For the corrosive gas, suitable corrosion-resistant material will be chosen to make pumps as per the gas type to ensure long-term reliable operation.
气体有腐蚀性的可根据气体的类型选用合适的耐腐蚀材料制造，并能保证长期可靠的运转。
The test bridge made of a new type of weather resistant steel of NH35Q steel has a strong resistance to atmospheric corrosion.
使用NH35Q耐候钢新钢种制作的试验桥，耐大气腐蚀能力强。
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