AC impedance shows that the porous layer and the barrier layer in the oxide film become denser and the metal substance was protected.
交流阻抗谱测试结果表明：掺入稀土之后，表面发生腐蚀的趋向减弱。 氧化膜的多孔层和阻挡层都得到了改善，变得更为致密，从而保护了金属基体。
参考来源 - 含稀土铝合金表面氧化膜结构与性能关系研究·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
The superiority of HDPE used in barrier layer of landfill was expatiated through the comparison of several manmade composite materials.
通过对几种人工合成材料的比较，阐述了高密度聚乙烯（ HDPE）土工膜在生活垃圾填埋场防渗层中应用的优越性。
In AC electrical field, the stable homogeneous glow discharge will appear by using dielectric barrier layer and high-frequency power source.
在交流电场中，利用介质阻挡层和高频激励源，可获得稳定均匀的大气压下辉光放电。
Good soldering result may be obtained by applying electroless nickel as barrier layer and electroless gold as top layer to provide solderability.
利用化学镀镍作阻挡层，化学镀金作可焊层，可得到良好的焊接效果。
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