越来越多的证据表明,陨石的撞击对地球产生了重要的影响,特别是在生物进化领域。
There is increasing evidence that the impacts of meteorites have had important effects on Earth, particularly in the field of biological evolution.
陨石的撞击代表了一种可能导致全球性灾难并严重影响地球上所有生命进化的机制。
Impacts by meteorites represent one mechanism that could cause global catastrophes and seriously influence the evolution of life all over the planet.
对于这个星系起源有几种假设,其中包括数十亿年前的一次星系撞击以及重力对中间消失地带的影响。
Genesis hypotheses include a galaxy collision billions of years ago and the gravitational effect of a central bar that has since vanished.
每次撞击都会对月球的转动状态产生重大的影响,并引起坚固的地幔和液体磁芯间的转速差异。
Each of these impact events would also have significantly affected the rotational state of the Moon, causing the solid mantle and liquid core to rotate differently.
跟公路赛车不同,驾驶舒适性不在方程式弹簧的考虑范围,阻尼比也非常硬,以确保撞击路面颠簸和路肩的影响尽可能快地缓和。
Unlike road cars, occupant comfort does not enter the equation - spring and damper rates are very firm to ensure the impact of hitting bumps and kerbs is defused as quickly as possible.
要求头盔符合公认的安全标准,这对于发生撞车事故时,确保能够有效降低对头部撞击带来的影响十分重要。
Requiring helmets to meet a recognized safety standards is important to ensure that helmets can effectively reduce the impact of a collision to the head in the event of a crash.
这个干扰会变大和有撞击效应,进而影响大脑的其他部分,还是迅速消失呢?
Would the perturbation grow and have a knock-on effect, thus affecting the rest of the brain, or immediately die out?
然而,科学家们已经建构出了新的模型来预测这种撞击的影响,结果显示这种破坏并不是如人们之前所预想的那么严重,不是在你附近的任何地方都会发生。
However, scientists have created a new model for predicting the impact of such collisions that shows the devastation wouldn't be anywhere near as severe as previously thought.
他们对是否是撞击的影响还是其他的天气影响导致后冰河世纪的新仙女木事件也存在分歧。
They also disagree about whether an impact or some other climate event caused the Younger Dryas at the end of the ice age.
我们的模型可以被用于估计地球过去历史上曾有撞击的范围和影响。
Our model can be used to estimate the magnitude and effect of other major impacts in Earth's past.
他把结冰期的到来和小行星撞击两者的影响说为“祸不单行”反常的导致了奇异的浮游生物和第一批肉眼可见的动物的产生。
He describes the effect of the icy climate and asteroid impact as a "double whammy" that paradoxically led to the "flourishing of exotic plankton and the first macroscopic animals".
但是就算是这样,这次撞击的规模如此之小,它对环境产生的影响应该比较小,影响范围也是局部的。
But even if it is, it is so much smaller that its environmental effect would have been both minor and local.
联邦航空局发言人罗兰·赫韦格表示目前尚未有地面撞击或影响航空器飞行的报告。
There were no reports of ground strikes or interference with aircraft in flight, FAA spokesman Roland Herwig said.
所以如果你飞的太快,则氢原子撞击船会有很高能量,渗入船体,放射射线影响乘客。
So when you're going fast, the hydrogen atoms come at the ship with high energy, penetrate the ship and irradiate the occupants.
鹦鹉螺还能抵抗撞击、振动、防盐防雾、防渗水并能经受噪声和电磁干扰的影响。
The Nautilus meets withstands shock, vibration, salt, fog, drip, fungus, acoustic noise, and EMI.
我们的恒星被一个超乎寻常大的掠日彗星撞击了,相机在有影响的7个小时前拍下了这一切。
Our star was hit by an unusually large sungrazer caught on camera careering towards it seven hours before impact.
但是造成的影响却是足够严重,撞击使得列车的一些窗玻璃碎掉了、门也被挤变形了。
The impact was hard enough, however, to smash some of the train's windows and crease its doors.
权威部门称,撞击影响区域当时“人员密集”,应急小组已经立即投入工作。
Authorities say the crash impact area was "fairly full" at the time and that emergency response teams immediately went to work.
世界银行表示在下一年利比亚经济撞击将会影响到该国12%的收入,对塞拉利昂造成9%的影响,在几内亚仍然会造成大约有2.3%的影响。
The World Bank says that the economic impact could be close to 12% of national income next year for Liberia, 9% in Sierra Leon and still a very substantial 2.3% in Guinea.
目的探讨撞击参数与影响损伤严重程度的撞击力之间的相互关系,以期为致伤机制和医学防护提供理论依据。
Objective to evaluate the relation between impact parameters and impact force, so as to provide theoretical basis for damage mechanism and medical protection.
先前的探测器使用降落伞降低下降时的速度,砸向地面时有安全气囊缓冲撞击的影响。
Previous rovers have deployed parachutes to slow their descents, and have then crashed into the ground using airbags to cushion their impacts.
通过选择不同的气体分子与壁面相互作用模型研究了壁面边界条件对羽流撞击效应的影响。
Influence of wall boundary condition on plume impingement effects is finally studied by applying various gas - (surface) interaction modeling.
通过对结构塑性动力学响应和叶片变形过程的分析,指出了叶片断裂时的不同转速对撞击过程及结果的影响。
Effects of rotation speed on the impact process and results are pointed out by the analysis of structural plastic dynamic response and blade deformation.
通过采用外部声激励的方式,在低速轴流压气机内研究非定常尾流撞击效应对压气机流场结构以及时均气动性能的影响。
Influence of the wake impact effect on the flow field and its average performance in a low speed axial-flow compressor was investigated by using external acoustic excitations.
叶片头部在不同的工况下均存在较大的水流撞击作用,适应来流不理想,这对泵的整体性能有很大影响,应予以修型。
There is great flow impact on the head of vanes at different condition, and it will affect the performance of pump system greatly, so the shape of the head of vanes should be improved.
然而进一步的说,人类对于地球的影响,完全相当于白垩纪的彗星撞击。
Yet, upon further reflection, human impact on the planet is a direct analogue of the Cretaceous cometary collision.
目的研究纵向撞击下胸腰椎的损伤阈值及其影响因素。
Aim to study the threshold value, mechanism and influence factors of thoracolumbar injury under longitudinal impact.
目的研究纵向撞击下胸腰椎的损伤阈值及其影响因素。
Aim to study the threshold value, mechanism and influence factors of thoracolumbar injury under longitudinal impact.
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