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- The type transform theory is extended to the analysis of geared linkages, so that any geared linkage can be decomposed into a series of single link and extended double bar Assur Group. 将型转化理论拓广于齿轮连杆机构的分析中，使任一齿轮连杆机构都可以分解为单构件和广义双杆组。
- The anterior and posterior palatal circle(double bar) on the other hand is mechanically and biologically sound and cannot be cirticized if it is loacted as not to impinge upon tissues. 前后腭杆设计无论在机械上还是在生物学上都比较合理，如果在设计上能够避免压迫软组织将是非常理想的。
- Double bars, swinging boards, multi-function training machines, seesaws, jogging machines and similar facilities have formed mini-sized gymnasiums, simple but meaningful. 双杠、秋千、多功能器械、跷跷板、跑步机和其他类似设备已经形成了小规模的体育馆，虽然简单，却很实用。
- He ordered a large double Scotch from the bar man. 他向酒吧服务员要了大杯双人份苏格兰威士忌。
- 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。
- single bar juncture 单杠音渡,单线音渡
- 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。
- 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。
