过渡

On the basis of analyzing transiting characteristics of the rope in transiting area, two theoretical formulas length and angle of transiting area are derived by means of differential geometry, mechanics and mathematical analysis methods.

从钢绳多层缠绕过渡过程入手，运用微分几何、力学、数学分析的方法，研究钢绳过渡情况，提出层间过渡块的几何形状和计算公式及钢绳圈间过渡长度和角度理论公式。

The construction of Pythagorean hodograph quintic spirals is introduced. Its use for the various transitions encountered in highway design is analyzed. Practical examples of highway design, namely, straight line to circle, circle to circle with C transition, using quintic PH spirals are illustrated.

介绍了五次PH螺线的构造，并将其应用于高速公路过渡设计中，展示了应用五次PH螺线进行直线到圆的过渡，圆到圆的C形过渡的实例。

Considering the main characteristics of metal transfer in GMAW, a mathematical model for metal transfer is developed based on the "mass-spring" theory. Dynamic analysis of metal transfer in GMAW process is conducted.

考虑GMAW焊接过程中熔滴过渡的主要特点，利用质量-弹簧理论建立了熔滴过渡的数学模型，对连续电流条件下GMAW焊接熔滴过渡过程进行了动态力学分析。