At that point it becomes a requirements exercise... do these gateways meet my needs, and if so, why am I continuing down a slower, more costly, more laborious path to the same end goal?
此时一个需求分析问题就出现了……这些网关能否满足我的需求？如果可以的话，为什么还要继续沿着原先那条更慢、更昂贵、更费劲的道路向相同的目标前进呢？
P1 If we have a curve c, from a point p0 to a point p1 then the line integral for work depends only on the end points and not on the actual path we chose.
如果曲线c，起点为P0，终点为1，那么计算所做功的线积分，只与端点位置有关，而与我们选择的路径无关。
Whenever the work that is done - by a force is independent of its path — it's only determined by the starting point - and the end point — that force is called a "conservative force."
不管何时一个力做功，与轨迹无关-，只取决于开始点，和结束点-，这个力被称为，守恒力。
For example: set the pavilion in the path set the color of the door at the end, rockery ladder at the end, a prominent focus of this point form can quickly get the vision.
例如：在林间小道的尽头设置凉亭，在假山阶梯的尽头设置彩门，这一种突出点的形式可以迅速获取视觉的焦点。
Says Kuzak: "in North America, we were on a path to get there." This is our end point.
Kuzak说：“在北美，我们通过道路从起点到达终点。”
At that point it becomes a requirements exercise... do these gateways meet my needs, and if so, why am I continuing down a slower, more costly, more laborious path to the same end goal?
此时一个需求分析问题就出现了了……这些网关能否满足我的需求？如果可以的话，为什么还要继续沿着原先那条更慢、更昂贵、更费劲的道路向相同的目标前进呢？
Click on the path to add the mesh, then select the white arrow tool, and select the end point.
在路径上单击添加网格，然后选择白箭头工具，选择结束点。
Click on the path to add the mesh, then select the white arrow tool, and select the end point.
在路径上单击添加网格，然后选择白箭头工具，选择结束点。
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