class cavity 中文意思是什麼

class cavity 解釋

The cavity above is composed of the wall of cavities and two layers films lies up and down, each of them has a layer of pzt chip. the cavities underside is composed of the wall of cavities, the film and a layer of class. there is circular valves lies in the import and export, and the material of the micropump films and the valves is silicon

提出了一種雙腔微泵結構設計方案，這種泵分為上下兩個泵腔，上面泵腔由腔壁與上下兩層薄膜圍成，每層薄膜上都有一層pzt片；而下面泵腔則由腔壁與圍成上面泵腔的下層硅薄膜及一層玻璃圍成，出入口處採用環形閥門結構，泵膜和閥片的材料為硅。
Moreover, my company return at the request of customer periodically or uncertain period the technique for holding the every kind of training class and scholarship meeting, providing the mouth cavity clinically repairing guide and helping the customer to buy the dental material and other dental equipments

另外，我公司還應客戶要求定期或不定期舉辦各種培訓班及學術會議，提供口腔臨床修復的技術指導和幫客戶采購各種齒科材料和其它口腔設備等。