Its motion direction is compared with the direction defined by the referenced motion direction field, which results in whether it is a crossing pedestrian.
依据参考方向场分析其轨迹的走向，以确定运动目标是否发生跨道行为。
This paper introduces an improved algorithm for fingerprint direction field estimation, the rotation angle estimation during constructing the singular point models is analyzed in details.
本文提出了一种改进的指纹纹线方向场计算方法，其中重点分析了奇异点模型中旋转角度的估计方法，并在复数域内简化了纹线方向场的优化计算。
Tom is a specialist in this particular field, so if you want any help, he can point you in the right direction.
汤姆是这一特定领域的专家，所以如果你需要帮助，他可以为你指出正确的方向。
Selecting one of these links re-sorts the result set by the specified field and direction.
选择这些链接之一，将根据指定的字段和方向对结果集进行重新排序。
And because it cannot just shed its energy of movement, it is forced to travel faster and faster in the direction of the field.
同时，由于离子不能释放自己的运动能量，它就被强迫沿着磁场的方向越来越快的运动。
As the field wanes, the number of sunspots falls to a trough or minimum, at which point the sun's magnetic field reverses direction and starts to regain its strength.
随着磁场减弱，太阳黑子的数量会减少到最小值或者说最低点(波谷)，然后太阳的磁场就会反方向运动，开始重新变强。
That means if you put an object in there that is completely immobile and you leave it in that force field, well, of course it might accelerate in some direction but it won't start spinning.
这就意味着，假如你将一固体固定在这个力场中,然后在力场中释放它，它有可能会朝向某一方向加速运动,但它绝不会旋转。
But if the dipoles form in the presence of an existing electric field, they immediately align along the same direction as the field.
但是，如果这些电偶极子处于电场中，他们就会立即沿电场的方向排列。
And we looked at the component of a vector field in the direction that was normal to the curve.
我们研究的是，向量场在曲线法向量方向的情况。
But it could be that, well, imagine that my vector field accidentally goes in the opposite direction then this part of the curve, while things are flowing to the left, contributes negatively to flux.
的确有可能出现往两个方向流动的情况，可以想象到，这一小部分往相反方向流动，当流体向左流时，就只能算作负值了。
In physics, a light field describes the direction of all the idealised light rays passing through an area.
在物理学中，光场描述的是理想状态下光线辐射穿过一个地区。
With the magnetic field turned on, the iron layers both magnetize, say, in the spin-up direction, so all of the spin-down electrons move through the entire sample without scattering.
加上磁场后，两个铁层都被磁化，假如是上方向，那么所有下自旋的电子移动通过整个样本都没有散射。
Electrons flowing through the chip would "see" a magnetic field that flips from one direction to the opposite every few hundred nanometres (billionths of a metre).
穿过芯片的电子可以“识别”某一磁场，该磁场每隔几百纳米(十亿分之一米)就变换一次方向。
This change in transmission allowed the researchers to find the size and direction of the magnetic field at the same time.
这一传递中的变化使得研究人员可以同时找到磁场的大小和方向。
The study found that monarch butterflies have an internal sense of direction that allowed them to get from one point to another even in the absence of light by sensing the Earth's magnetic field.
有研究发现帝王蝶有方向感，可以让他们在没有光的情况下，通过磁场感应的方式，它们能精确的从某处飞到另一个地方。
The interplanetary magnetic field fluctuates greatly in magnitude and direction.
行星际磁场在不同的星等和方向强度差别很大。
So when the fibre is drawn the researchers apply a powerful electric field to ensure that the molecules in the plastic all line up in the same direction as the fibre cools.
当纤维提取出来后，研究人员会对其施加一个强大的电场，以保证纤维冷却后，塑料的分子都按照同一方向排列。
Massachusetts General HospitalStandard MRI machines create a magnetic field that orients the hydrogen within body tissues’ water molecules in one direction.
麻省总医院标准的MRI机器能纸草一个磁场，让人体细胞内所有水分子中的氢朝向一个方向。
Convection in the magnetosphere and ionosphere can be strongly driven by these fluctuations, independent of the direction of the interplanetary magnetic field.
磁气圈和电离层之间的能量传递可以靠磁场的变化产生的强大的推动力，而不一定要依赖于行星际磁场方向。
Stefan Maus: They're equipped with very sensitive magnetometers that measure the direction and strength of the magnetic field and that altitude.
斯特芬•茅斯：科学家们采用非常灵敏的磁力计来测量地磁场的方向、强度及方位。
The sample was then exposed to a magnetic field applied parallel to the direction of flow of blood via a coil around the edge of the test tube.
然后，将样品放置在通过缠绕在试管边缘的线圈而产生的磁场中，该磁场的方向与血液流动方向相同。
Moreover, turtles responded to the magnetic fields by orienting themselves in a direction that would have led them towards the capture site had they been where each magnetic field naturally occurs.
此外，如果海龟处在磁场自然分布的任何一个地方，他们就会对磁场做出这样的反应，即，引导自己朝向捕食地点。
They sort left from right versions using circularly polarised light, whose electric field corkscrews through space in a left or right-handed direction.
旋转偏振光被他们用来筛选左手性和右手性分子，这种光的电场以左手或右手螺旋形式在空间旋进。
When light waves were projected onto the disc, the direction of the electric field within the waves aligned with the gold nanorods.
当光波被投射到光盘上时，光波内电场的方向会与金纳米棒相一致。
As magma rises under the mid-ocean ridge, ferromagnetic minerals in the magma become magnetized in the direction of the magma become magnetized in the direction of the geomagnetic field.
当岩浆从中海脊下涌起的时候，岩浆中的磁铁矿物质按地磁场的方向被磁化。
So, if instead you put your particle somewhere down here on the electric field, or on the wave, the electric field will now be in the other direction so your particle will be pushed the other way.
还有方向，所以如果，你把粒子放在这下面，电场的方向相反，粒子会朝另一个方向运动。
Is it going in the same direction as the magnetic field going through the Earth?
它们和穿过地球的磁场的方向一致吗？
Is it going in the same direction as the magnetic field going through the Earth?
它们和穿过地球的磁场的方向一致吗？
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