At present, the most widely used in industry is the water ring vacuum pump and rotary vane vacuum pump and so on.
目前工业中应用最多的是水环式真空泵和旋片式真空泵等。
Styles: With its strength in internationalized vision and outstanding designs & high tastes, Steel-land has been the vane for designs for China upholstery furniture industry.
风格定位：斯帝罗兰刚进入中国，她就以国际化的视野，出众的设计品位成为中国软体家具设计的风向标，其每一款新品的推出都令市场为之侧目。
LI Keying. Vane Pumps and Motors [m]. Beijing: Machinery Industry Press, 1993.
[1]黎克英。叶片式液压泵和马达[m]。北京：机械工业出版社，1993。
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