、化學(xué)銑切及化學(xué)紋理蝕刻等四種。關(guān)于這四種表述可從以下幾方面理解：
In a professional sense, the principle of etching specifically refers to a controlled corrosion behavior of metals carried out through professional etching machines according to design and process requirements. Through this controlled chemical processing, certain design requirements for specific occasions can be met, which traditional mechanical processing methods cannot achieve. Chemical corrosion of metals, more commonly referred to as the chemical loss caused by the chemical damage of metals in the natural environment, is widely accepted as the definition of metal corrosion: the chemical loss behavior of metals caused by damage or deterioration caused by chemical or electrochemical reactions between metals and surrounding environmental media. From this definition, various types of corrosion of metals are actually chemical losses of metals. There are four popular language expressions for metal chemical loss: chemical corrosion, chemical etching, chemical milling, and chemical texture etching. These four expressions can be understood from the following aspects:
化學(xué)腐蝕:化學(xué)腐蝕是一家莊電動伸縮門 保定桌椅  保定水處理設(shè)備 河北機(jī)械加工  保定養(yǎng)老院  保定防水種金屬化學(xué)損失的普遍現(xiàn)象和過程