常見例句雙語例句The utility model relates to a rotary-vane vacuum pump, which provides a column spiral torsional spring which is used for replacing a column spiral compressing spring.本實用新型涉及旋片式真空泵，提供一種圓柱螺旋扭轉(zhuǎn)彈簧，用它取代圓柱螺旋壓縮彈簧。ip.comIn this paper, the problems met in designing, producing and use of the rotary-vane vacuum pump are discussed. The solution methods and the research direction are given.本文論述了旋片真空在設(shè)計、生產(chǎn)和使用中存在的問題，提出了解決的方法和研究方向。The most common rotary-pump designs used today are spur-gear, generated-rotary , sliding-vane , and screw pump , each type has advantages that make it the most suitable for a given application .今天最常用的旋轉(zhuǎn)泵是外齒輪泵、內(nèi)齒輪泵、擺線轉(zhuǎn)子泵、滑動葉片泵和螺旋泵。每種類型的泵都有優(yōu)點，適合于特定場合的應(yīng)用。56doc.com 返回 rotary-vane pump