• Science offers no plausible explanation of how it could have slowed to its current rotational rate from that speed.

    科学没有给出合理解释,说明它是如何那个速度减速现在转速的。

    youdao

  • Earth's unique and massive satellite, the Moon, plays a crucial role in stabilizing the obliquity of Earth's rotational axis.

    地球独特巨大卫星——月球稳定地球旋转轴倾角方面发挥关键作用

    youdao

  • Finally, Earth's unique and massive satellite, the Moon, plays a crucial role in stabilizing the obliquity of Earth's rotational axis.

    最后月球作为地球独特巨大卫星稳定地球旋转轴倾角方面发挥关键作用

    youdao

  • For an object to be in rotational equilibrium about a certain point, the total torque about this point must be zero.

    物体一点处处于转动平衡,在一点处的力矩必须为零。

    youdao

  • Linear molecules, I have kT of rotational energy.

    线性分子kT转动

    youdao

  • There's also rotational disorder if it's a molecule.

    如果分子旋转无序

    youdao

  • Use Rotational Symmetry to Convey Movement and action.

    使用旋转对称传达动作行为

    youdao

  • Remember, torque is the rotational analog of the force.

    扭矩转动对应量。

    youdao

  • Even on a static medium, rotational symmetry can convey action.

    即使一个静态介质中转动对称也可以表达出动态的意味。

    youdao

  • In art and design, rotational symmetry can be used to portray motion or speed.

    艺术设计中,转动对称可以用来表达动作速度

    youdao

  • The average rotational latency is one-half of a revolution of the disk platter.

    平均旋转等待时间指磁盘旋转一半的时间。

    youdao

  • Earth's rotational tilt varies between 0.5 and 1 degree about every 100, 000 years.

    地球旋转倾角10万变化在0.5到1之间

    youdao

  • Then, using vector analysis, you use rotational symmetry, and you get this next set.

    但是当使用矢量形式时,一种轮换对称的形式,你们会看到接下来这种形势。

    youdao

  • So another way to think about that is just the rotational kinetic energy of our electron.

    或者,这样,电子旋转动能

    youdao

  • If I know the moment of inertia, then I know how much rotational kinetic energy there is.

    知道转动惯量知道,转动动能多少

    youdao

  • Geometry dictates that only two -, three -, four - and six-fold rotational symmetry can exist.

    几何规定旋转对称只能次,次,存在

    youdao

  • In other words, ordinary thermal energies do populate some number of rotational levels of molecules.

    就是说,常温会,激发分子一些转动能级

    youdao

  • Nor do the laws of nature change depending on the direction in which you look (rotational symmetry).

    定律不会因为观察方向不同改变(这是转动对称性Rotational Symmetry)。

    youdao

  • And the rotational kinetic energy can be consumed, then, at a later time, so it's very economical.

    选择动能,之后时间,消耗,非常经济的。

    youdao

  • To make this simple, we're going to assume that the rotational energies are the same for all the molecules.

    为了问题简单清晰一些我们假设转动能量对于所有分子,一样

    youdao

  • Rotational symmetry (or radial symmetry) is when an object is rotated in a certain direction around a point.

    旋转对称(称放射对称)物体绕着一点某一方向上转动

    youdao

  • That figure axis is near, but does not quite align with, the rotational axis that the Earth spins around.

    这个几何中轴靠近的确地球自转中心排成一行

    youdao

  • That is impossible. Geometry dictates that only two-, three-, four- and sixfold rotational symmetry can exist.

    然而几何学告诉我们,只有次、次、四次六次的旋转对称是能够存在的形式。

    youdao

  • One way to see this is to compare the energy of a nuclear blast to that of the rotational motion of the Earth.

    方法可以说清楚这个问题:核爆炸能量地球转动的能量作比较

    youdao

  • So you should also be able to get the rotational kinetic energy out and convert that again into forward motion.

    这样,得到旋转动能,再次转化它,变成别的能量

    youdao

  • And this rotational kinetic energy can then be, perhaps, converted into electricity or in other forms of energy.

    这个旋转动能可以转换电力或者其他形式能量。

    youdao

  • then, you would have consumed up all the rotational kinetic energy and then the earth would no longer be rotating.

    十亿年以后你们已经消耗完,所有旋转动能,然后地球不会旋转。

    youdao

  • Rotational symmetry in nature is found in everything from the petals of a flower to the topside view of a jellyfish.

    自然界花瓣水母顶部视角图,随处可以发现转动对称存在。

    youdao

  • To pump energy back into the grid, some of the rotational energy is bled off to power a generator on the main shaft.

    电能送回电网时,就释放一部分转动动能,开动位于主轴的发电机

    youdao

  • Maybe the sun is spinning down, is slowing down and maybe the energy that we get is nothing but rotational kinetic energy.

    也许太阳转速正减慢,也许我们得到能量,不是别的,而是旋转动能。

    youdao

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