查询词典 second boundary value problem

Experiments on synthetic images with low signal-to-noise ratio and scene images show good performance and robustness of the approach, especially it's capabilities of capturing the discontinuous boundary and moving snakes into boundary concavities.

对人工合成的低信噪比图像及景物图像的实验表明本文方法具有很好的性能及鲁棒性，特别是在处理目标边缘不连续及有凹形边缘时更显示了其优越的性能。

Experiments on synthetic images with low signal-to-noise ratio images and nature images show good performmance and robust of the approach, especially it's capable to capture the discontinuous boundary and move snakes into boundary concavities.

对人工合成的低信噪比图像及自然图像的实验表明，本文方法性能良好，工作稳定，具有较强的处理边缘不连续及进入凹形边缘能力。

The Bengtsson-Jacobson conjecture that "degenerate phase boundaries are always null" is studied by the mapping language in Chapter 4. By distinguishing a "phase boundary" from its image in the "covariant approach", the nulless of the image is proved. Time-like and null hypersurfaces in the degenerate space-times in the Ashtekar theory are denned, and then the phase boundary obtained by the "covariant approach" is shown to be always null.

我们在第四章用映射的语言分析了Bengtsson和Jacobson关于&相边界为类光&的猜想；通过区分&协变方法&中的&相边界&和它的像，我们证明了像的类光性；在定义了Ashtekar退化时空中的类时和类光超曲面之后，我们证明了&协变方法&得到的相边界必定是类光的。

The results showed that the adhesion characteristic between PC and acrylate adhesive was significantly improved after modification because of ion beam bombardment resulted in excellent hydrophilicity, increasing of the polarity, denuding of the weak boundary and engendering of crosslinked boundary.

结果表明：改性后的PC与丙烯酸酯胶黏剂的压剪强度得到了明显的改善。经分析，粘接性能的改善是由于低能离子束表面改性后的PC表面润湿性能的改善、表面活性的提高、表面弱电层的剥蚀和表面微交联层的生成引起的。

The plastic deformation which is caused by the enrichment of edge dislocation with the same symbol, the incline crystal boundary which occurs when edge dislocation arranges vertically and the dissymmetry incline crystal boundary which is born of the distortion of crystal lattice are the three kinds of possible mechanism by which the graphite gets more crooked as nitrogen adds.

同号刃型位错群聚产生的范性变形，同号刃型位错垂直排列所产生的倾侧晶界，以及因晶格畸变而产生的非对称倾斜晶界是氮使石墨弯曲程度增大的三种可能机制。

More than 100 unforgettable days and nights, members of the Joint Inspection of all work and live in the mountains of the Himalayas, the snow lying on ice climbing,Hard to make a living, sincere cooperation, a high sense of responsibility and mission, completed more than 1400 km boundary line and 100 stars the work of the Joint Inspection of the boundary markers.

一百多个难忘的日日夜夜，全体联检成员工作生活在喜马拉雅山脉的群山里，爬冰卧雪、风餐露宿、精诚协作、以高度的责任感和使命感，完成了1400多公里边界线和100颗界桩的联检工作。

Automatic boundary extraction of multiple targets of interest in an ultrasound image can not only help clinicians find out most perceptible objects, but also save sonologists' time for boundary delineation. Moreover, it is potentially helpful for the novice instruction and medical research.

中文摘要超音波影像之目标物自动边缘侦测，可帮助临床医师找寻可疑的目标物，节省检测人员手绘目标物的时间，还可以应用於超音波影像之电脑辅助诊断，新进医师的辅助教学，对於医疗诊断与教学研究都有帮助。

So the West is scientific, the non-West is not; physicians are scientific, midwives and alternative healers are not; chemists are scientific, wives and husbands in their kitchens are not. This process is most pronounced, in general, in those societies that border occident and orient. If our focus is on science, then the process of orientalizing and occidentalizing should be most pronounced just at the boundary between science and the humanities, and even more so at the boundary between the physical, the natural, and the social sciences.

西方是科学的，非西方则不是；医师是科学的，接生婆和江湖术士则不是；化学家是科学的，厨房里的妻子和丈夫则不是；总体上，这一过程非常明显，在那些社会之中界定着西方的和东方的；如果我们的焦点是在科学上，那么西方化和东方化的过程应该是在科学与人文的分界点上是最明显的，甚至是在物理科学、自然科学和社会科学的分界点上是最明显的。

When Nb segregates at grain boundary, the bonds across grain boundary are strengthened, while the interactions between Nb and its neighboring atoms are weakened.

Nb和Ti周围的Fe原子相互作用有所减弱，而Nb和Ti原子两边的跨晶界的原子间的相互作用加强，反映了替位Nb、Ti原子强化Fe晶界的作用。

In these boundary conditions, Boundary Integral Method has been discussed as the most important part. We use the hybrid FEM combined with BIM to analyze the electromagnetic scattering properties of objects and discuss the advantages of this hybrid method in truncating computational region、 accuracy、efficiency、 versatility and so on .

重点在于应用结合边界积分方程这一开域边界条件的混合有限元算法实现对目标散射特性问题的分析，探讨和研究此混合算法在求解目标散射问题时在缩减求解域、实施的难易程度、精度、效率和通用性等方面上的优势。

Chinese traditional virtue is humility and wariness,the compliment and praise to the others should be declination

中国人的传统美德是谦虚谨慎，对别人的恭维和夸奖应是推辞。如

We bought this house on the never-never.

我们以分期付款的方式买下这座房子。