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- double oil path seal 双油路密封
- Brazil plans to more than double oil production by 2020, with over one-third coming from recently discovered, ultradeep offshore 'subsalt' fields. 巴西计划2020年以前使本国的石油产量增加一倍以上，超过三分之一的石油产量将来自最近发现的海上超深水油田。
- With double oil sylinders,four-column guide,synchronic balance of crank, bringing about strong cutting force and high cutting precision. 采用双油缸四柱导向，曲柄同步平衡，裁断力大，裁断精度好。
- Four-column double oil cylinders mechanism and precise automatic balancing mechanism are adopted to reach high ton cutting force and ensure identical cutting depth at each point. 采用四柱式，双油缸驱动机构，精密自动平衡结构，达到高吨位裁断力，并保证每个点的裁断浓度完全一致。
- Design of Oil Path of Valve in Oil Press 二通插装阀方向油路设计中的几个问题
- The bright-spot defect can be avoiced through controlling the physical and chemical properties of rolling oil and doubling oil, ensuring surface quality of the roll and rolled aluminium foil stock. 控制双合油及轧制油的理化指标，确保轧辊表面和轧制材料表面质量均匀、无损伤，可消除亮点缺陷。
- double oil seal 双油封
- 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。
- 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。
