分叉

Then we use above mentioned theory to study degenerate bifurcations of codimension two in nonlinear oscillator under combined parame-tric and forcing excitation. Thereby stability problems with double zero eigenvalues can be solved.

然后利用上述理论研究了参数激励与强迫激励联合作用下非线性振动系统的余维2退化分叉，从而解决了当解具有两个零特征值时解的稳定性问题。

AIM: Many studies have been conducted to explore the mechanical performance of spike plate, in which the models of fracture are concentric comminution.

目的：国外已有分叉钢板的力学性能研究，但其运用的骨折模型为同心圆型粉碎骨折模型。

The continuation method plays a very important role in handing load, real power generation variations and voltage stability of electric power systems.

作为电力系统区域间输电能力研究的前提，本文对系统严重故障选择进行了深入的研究，提出了一种快速有效的基于鞍点分叉的故障排序新方法。

Follicles widely divergent, thick, finely longitudinally ribbed or corrugate, not winged .

分叉的蓇葖果宽，厚，好具纵向肋或皱，无翅。

Linear deformation of the stator and a Coulomb type of frictional relationship were considered in the model.

分析表明，系统除具有各种形式的周期和概周期振动以外，还具有丰富的混沌运动与分叉现象。

Wood selected for cribbing should be solid, straight and free of major flaws such as large knots or splits.

选做支架的木材必须坚固，笔直，没有大的缺陷，如大节或分叉。

The optical switches and optical switch arrays are the key devices in the optical cross-connect equipments and optical add and drop multiplexing equipments ,which are the important components in the all-optical network.

在全光网络系统中，光交叉连接设备与光分叉复用设备是其重要组成部分，而光开关与光开关阵列又是OXC与OADM的核心器件。

Results:The following were observed and measured:the location where the genitofemoral nerve coming out from the psoas major,the plane of the location the highest plane of the iliac crest,common iliac vessels branch plane,the distance between the ureter and the lateral part of the psoas major,the distance between the genitofemoral nerve and the lateral part of the psoas major,the distance between the genitofemoral nerve and the ureter,the location at the decussation of the genitofemoral nerve and the ureter.

结果：观测了生殖股神经穿出腰大肌的位置；在穿出点平面、髂嵴最高点平面、髂总血管分叉平面，输尿管距离腰大肌外侧缘的水平距离，生殖股神经距离腰大肌外侧缘的水平距离，生殖股神经与输尿管的水平距离；生殖股神经与输尿管交叉点与腰大肌外侧缘的水平距离，交叉点距离髂嵴最高点平面的垂直距离。

The curriculum comprises the fundamental concepts of point set topology, differential manifold and differential dynamics, followed by the conceptions and theoretical methods of abrupt change, bifurcation, chaos and fractal. The analysis and compare combined with the practice in power system make it easy for readers to learn the basic methods of nonlinear dynamics and write high quality papers.

本课程主要内容包括点集拓扑学、微分流形和微分动力系统的基本概念，后面部分主要涉及到突变与分叉、混沌、分形和分维概念和理论方法，并结合电力系统实际例子加以分析与比较，使读者很快掌握非线性动力学的基本方法，能够写出高质量的文章和学术论文。

Finally, the influences of porosity and saturation on the discontinuous bifurcation are discussed.

最后，探讨了三相孔隙介质的孔隙度和饱和程度对非连续分叉的影响。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失