抛物线的焦点位于抛物线轮廓外部。
The focus of the parabolic profile is located outside of the profile.
并编制了直线、圆弧和抛物线的轨迹程序。
And the trace programme of a line, a arc and a parabola is established.
注意：射出去的箭是有抛物线的，要掌握好时机再射。
Note: to shoot the arrow is a parabola, we must grasp the opportunity of re-launching.
这样一个抛物线的最低点的人买房子，买房子当然是最合适的时间。
Such a parabola for the lowest point of people buy a house, buy a house of course, is the most appropriate time.
两个对齐的石板平衡了屋顶，这也是复制相应悬链线抛物线的结果。
Two aligned end blocks counterbalance the roof, the formal result of copying the parabola of the corresponding catenary.
本文将分别对双曲线、抛物线的参数方程阐述几何意义(见例2、例3)。
This paper describes the geometric meaning for the parametric equation of hyperbola and parabola, respectively (see examples 2 and 3).
他们利用传感器，把球抛到到抛物线的顶点时，每一个镜头会同时进行拍摄；
With integrated sensors, the ball detects when it has reached the apex of its parabola and will takes photos from each camera.
呈现抛物线的市场，正如许多大宗商品那样，往往会隔一段时间就会在较低水平整固一下。
Markets that have gone parabolic, as the ones for many commodities have, are apt to, um, consolidate every once in a while at lower levels.
钥匙们闪着光缓慢的上升，在抛物线的尽头短暂停留，而后不出意外的又掉落回他手中。
They rose ever more slowly, paused, shining, at the top of their arc, and then in accordance with everything our Galilean ape brains have ever learned to expect, crashed back down into his hand.
物理学中的定理规定了在任何一种跳跃中，一个舞者的重心是循着一条抛物线的轨迹走的。
The laws of physics decree that during any jump, a dancer's center of gravity must follow a parabola.
当第一级烧毁后，沿抛物线的轨道落到地球，而第二级的发动机点火把火箭发射到地球轨道。
After the first stage burns out it falls back to earth along a parabolic path while the engines of the second stage fire to thrust the rocket into an earth orbit.
理论上，水泵调速高效区为通过工频高效区左右端点的两条相似工况抛物线的中间区域OA1A2(见图1)。
In theory, the pump speed zones for the adoption of efficient frequency efficient area around the endpoint of the two conditions similar to the middle parabolic OA1A2 (see Figure 1).
若同时保持吸气过热度一定，则三联式系统内两单机的膨胀阀开度、制冷剂质流量、制冷量呈现出抛物线的依变关系；
With the suction superheat kept constant meantime, the valve opening, refrigerant mass flow rates and the cooling capacity between two individual units exhibit a parabola relationship.
我们得到一条在一个方向上向下，而在另一个方向上向上的抛物线。
We have a parabola going downwards in one direction, and upwards in the other one.
我们可以画出这样的开口向下的抛物线。
建筑物采用了倾斜的抛物线屋顶。
当飞机以抛物线飞行并暂时抵消部分重力时，学员将能体验到近似失重的状态。
Participants undergo near-weightlessness as the plane is flown in parabolic maneuvers that create temporary reduced gravity.
这是个抛物线,它完全是对称的
这点很重要，你们要知道，这是条抛物线，并且这里，是水平的。
It's important, you have to know that, so this is a parabola and this, here, is horizontal.
得到的是在一个方向上开口向下，而在另外的一个方向开口向上的抛物线。
So, we have a parabola going downwards in one direction, upwards in the other one.
也不是沿一条抛物线轨迹，因为小球是竖直射出的。
It wasn't going into a parabola because I was shooting it straight up.
别老看那条曲线，别老看那些没用的抛物线、曲线。
Don't look at that curve at just some dumb parabola, some dumb curve.
毋庸置疑，是个抛物线，用我刚才得到的，这个已知信息。
It's, of course, a parabola and I use this information that we have just derived.
NASA表示，这一抛物线设计可以通过控制气流来减少冲击波的产生。
The parabola would control air flow in a way that would lessen the shockwave, NASA says.
所以，试着看，网球是一个，比较理想的抛物线。
So, try to see that the tennis ball is very close to an ideal parabola.
看，这跟一个开口向上的抛物线类似的。
测试是在一个抛物线飞行的航空器上，希望年底前能完成。
This will be done on a parabolic aircraft flight hopefully before the end of the year.
测试是在一个抛物线飞行的航空器上，希望年底前能完成。
This will be done on a parabolic aircraft flight hopefully before the end of the year.
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