...,碱性溶液,材料保护,铁质材料。 [gap=3608]Key words:electroless nickel plating, alkali solution, materials protection, iron materials.
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对于这样的景观,我们利用窗洞框选出最好的视角,并将窗框上生锈的铁质材料看作为一幅画的外框架。
With that landscape, we choose the best view with best screen, and we make the Windows with rusty iron material like a frame of picture outside.
用耐火材料砌筑锌锅取代传统铁质锌锅可大大延长锌锅的使用寿命,并改善钢丝镀锌质量。
Replacing traditional iron pot for galvanizing by dipping with pot built of refractory can greatly prolong its service life and improve galvanizing quality of steel wire.
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