1. According to different requirements for cleaning accuracy, it is mainly divided into three categories: general industrial cleaning, precision industrial cleaning and ultra precision industrial cleaning.

一般工業清洗包括車輛，輪船、飛機表面的清洗，一般只能去掉比較粗大的污垢；

General industrial cleaning includes the cleaning of the surface of vehicles, ships and aircraft, which can only remove relatively coarse dirt;

精密工業清洗包括各種產品加工生產過程中的清洗，各種材料及設備表面的清洗等，以能夠去除微小的污垢粒子為特點；

Precision industrial cleaning includes cleaning in the processing and production of various products, cleaning of various materials and equipment surfaces, etc., which is characterized by the removal of small dirt particles;

超精密清洗包括精密工業生產過程中對機械零件、電子元件，光學部件等的超精密清洗，以清除極微小污垢顆粒為目的。

Ultra precision cleaning includes ultra precision cleaning of mechanical parts, electronic components and optical components in the process of precision industrial production, with the purpose of removing very small dirt particles.

2．根據清洗方法的不同，也可以分為物理清洗和化學清洗：利用力學、聲學、光學，電學、熱學的原理，依靠外來能量的作用，如機械摩擦、超聲波、負壓、高壓．)中擊。紫外線、蒸汽等去除物體表面污垢的方法叫物理清洗；依靠化學反應的作用，利用化學藥品或其它溶劑清除物體表面污垢的方法叫化學清洗．如用各種無機或有機酸去除物體表面的銹跡、水垢，用氧化劑去除物體表面的色斑，用殺菌劑。

2. According to different cleaning methods, it can also be divided into physical cleaning and chemical cleaning: using the principles of mechanics, acoustics, optics, electricity and heat, relying on the action of external energy, such as mechanical friction, ultrasonic, negative pressure and high pressure). UV, steam and other methods to remove dirt on the surface of objects are called physical cleaning; Depending on the action of chemical reaction, the method of using chemicals or other solvents to remove dirt on the surface of objects is called chemical cleaning. For example, various inorganic or organic acids are used to remove rust and scale on the surface of objects, oxidants are used to remove color spots on the surface of objects, and fungicides are used.

消毒劑殺滅微生物并去除霉斑等．物理清洗和化學清洗都存在著各自的優缺點，又具有很好的互補性。在實際應用過程中，通常都是把兩者結合起來使用，以獲得更好的清洗效果。

Physical cleaning and chemical cleaning have their own advantages and disadvantages, and have good complementarity. In the process of practical application, the two are usually combined to obtain better cleaning effect.

3．根據清洗媒介的不同，又可以分為濕式清洗和干式清洗：一般將在液體介質中進行的清洗稱為濕式清洗，在氣體介質中進行的清洗稱為干式清洗．傳統的清洗方式大多為濕式清洗，而人們比較容易理解的干式清洗也就是吸塵器．但近年來，干式清洗發展迅速．如激光清 洗．紫外線清洗，等離子清洗、干冰清洗等，在高。精，尖工業技術領域得到快速發展。

3. According to the different cleaning media, it can be divided into wet cleaning and dry cleaning: generally, the cleaning in liquid medium is called wet cleaning, and the cleaning in gas medium is called dry cleaning. Most of the traditional cleaning methods are wet cleaning, and the dry cleaning that people can easily understand is vacuum cleaner. However, in recent years, Dry cleaning develops rapidly, such as laser cleaning, ultraviolet cleaning, plasma cleaning, dry ice cleaning, etc. The field of fine and advanced industrial technology has developed rapidly.

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