pitchn.球场；程度；音调；推销；投掷；街头商贩摊位；沥青；树脂；松脂v.投；颠簸；搭帐篷；定调；推销；用沥青覆盖pitch for为 ... 作宣传; 替 ... 说好庆; 试图说服别人做某事

1. The tangency point is known as the pitch point.
   两节圆的切点成为节点。
2. We will consider this example from the nodal analysis point of view.
   我们从节点分析法的观点来考虑这个例子。