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- double ellipsoidal tank 双椭圆形水箱
- The comparisons between the simulated results of two models and experiments show that double ellipsoidal model is better than Gaussian model on three-dimensional analysis. 两种模型的仿真结果与工艺试验结果比较表明，双椭球形热源模型比高斯热源模型更适合双丝焊的三维有限元分析。
- The 2D computed temperature by using heat source model of double ellipsoidal Gaussian distribution gives best agreement with the measured value. 利用双椭圆热源分布的数值计算模型和实际检测二维温度场分布结果作为边界条件，获得了整个焊件更宽温度范围和三维温度场分布的在线模拟。
- Directly employing moving double ellipsoid heat source model in electron beam welding numerical simulation will lead to huge calculation and low efficiency. 直接利用移动双椭球热源模型对电子束焊接过程进行数值模拟时,计算量庞大,计算效率低下。
- The result of numerical simulation indicated that neither general double ellipsoidal heat source nor three-dimensional conical heat source could precisely describe the thermal process in K-PAW. 数值模拟结果表明,一般的双椭球体热源和三维锥体热源不能准确描述小孔等离子弧焊接热过程。
- Based on Gaussian heat source model and double ellipsoid heat source model respectively, the calculating formulas of two models in double wire welding were derived, the proper finite element model was constructsed. 摘要分别以高斯热源模型及双椭球形热源模型为基础，推导出两种模型用于双丝焊的计算公式，建立了合适的有限元模型。
- This paper adopts Goldak heat satisfied Gauss function and the inner heat distributes in double ellipsoids function. 焊接温度场的准确计算必须建立起准确的热传递和相变计算的数学模型以及符合焊接生产实际的物理模型。
- 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。
