）的方向与路的起点到终点的方向一致，称为路的前向弧 （forward arc）；另一类弧aI一瓴。‘）的方向与路的起点到终点的方向不一致，称为 路的后向弧或反向弧（backwardarc）。
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A new double single-ended forward arc welding power inverter with IGBT as power device and current PWM controller is introduced in this paper.
提出了一种新型的双重单端正激式弧焊逆变电源，采用IGBT为开关器件，引入了电流型脉宽调制控制器。
As you exit graduate school, an arc connecting your results should emerge, proving to faculties that your research has a profitable path forward.
当你博士毕业的时候，你的成果会形成一条路径，你需要增强自身的能力，在有可能收获的路径上不断前进。
On the base of the program pre-reading and the smooth algorithm between lines for micro-beeline machining of CNC milling, the arc smooth algorithm with linear transformation is brought forward.
在数控铣微直线加工程序预读、直线段间平滑算法的基础上，提出了线性变换圆弧平滑算法。
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