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- But the so-called Massachusetts pump invented in USA in 1818 with straight radial blades, semi-open double suction impeller and volute is more close to the modern centrifugal pump. 但更接近于现代离心泵的，则是1818年在美国出现的具有径向直叶片、半开式双吸叶轮和蜗壳的所谓马萨诸塞泵。
- Study at vane inlet angle of double suction pump 双吸泵叶轮叶片包角的研究
- double suction straining coating method 抽真空抽滤涂渍法
- Experimental Study on Improving Performance of Double Suction Pump 双吸离心泵性能提高及其试验研究
- He is working double tides to finish his essay. 他日夜苦干，赶写他的文章。
- I do not realize it is a double feature. 我原先不知道这是双片连映。
- Double agents live in a perpetual state of fear. 两面派永远过着提心吊胆的生活。
- I want a double room with a view. 我要一间能看到风景的双人房间。
- He was so fat that he had a double chin. 他胖得有双下巴了。
- Double Suction Straining Coating Method for the Preparation of Packed Column of Gas-liquid Chromatography 气液色谱填充柱双抽涂渍法
- The carpet is too thick to double up. 这地毯太厚没法折叠。
- Is the material single width or double width? 这幅料子是单幅的还是双幅的？
- Reserve double room June fourth to tenth inclusive. 预订双人房间，六月四日至十日，共六晚，望订妥复电。
- In this case, I can double for penalty. 假如这样的话，我可以叫加倍了。
- Can you tell me the rate for a double room, please? 请告诉我一间双人房的费用可以吗？
- The soldiers came at the double. 士兵们是急行军来的。
- A couch performs a double service. 躺椅有双重的服务。
- Look, double yellow lines you mustn't park here. 喂，这是双黄线--不能在这儿停车。
- Please double up the chair and put it aside. 请把椅子折起来放在一边。
- For strong sewing use double, not single thread. 为了缝得牢，用双线，而不要用单线。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
