这些狗总是往墙上蹭，留下了点点污斑。
The dogs are always rubbing against the wall and making dirty marks.
我们贴上壁纸盖住了墙上的污斑。
他看到了窗玻璃上的一个污斑。
外观：不应有破碎、明显的污斑。
Appearances: There shall not be break up and any remarkable blotch.
我们得用涂料把墙壁上的污斑遮盖住。
卷料污斑也由此产生。
以树脂为基体的复合材料在微孔加工中会产生严重污斑现象。
The compound material of resin matrix may produce serious smirch phenomenon during the minute hole drilling.
洗涤过程中氧漂白对去除污斑起着重要的作用。介绍了活性氧漂白体系的生产、活化和应用过程。
The oxidative bleaching process plays a key role in removing unwanted stains from laundry This review covers methods of generation of active oxygen bleaching species, their activation and application.
发霉变色：这种问题多发生在潮湿的油漆表面，如水汽凝聚在玻璃和金属表面时常会产生棕黑色的污斑。
Mildewy become angry: this kind of question happens in damp paint surface more if lunt condenses in glass and metallic surface constant meeting produces the blotch of palm black.
前言：对用电子显微镜测量薄膜厚度的三种方法：双束衍射法、污斑法、污线法进行了实验及比较分析。
The experiments , comparison and analysis for the three thickness measurement methods :two-beam diffraction method , contamination spot method and contamination line method were carried out.
前言：对用电子显微镜测量薄膜厚度的三种方法：双束衍射法、污斑法、污线法进行了实验及比较分析。
The experiments , comparison and analysis for the three thickness measurement methods :two-beam diffraction method , contamination spot method and contamination line method were carried out.
应用推荐