They combine with dust particles from the comet to form a huge cloud.
它们与来自彗星的尘埃颗粒结合在一起，形成了巨大的云团。
Planets are believed to emerge from the accretion of particles in a disk of gas and dust as they whirl around the star.
行星被认为是由围绕恒星旋转的气体和尘埃组成的圆盘中的粒子累积而成。
Engineers working on sensors think this will eventually lead to "smart dust" -sensors as small as dust particles that can be dispersed on a battlefield, say, to spy on the enemy's movements.
致力于传感器的工程师认为这将最终导致“智能尘埃”的诞生，这是一种可被散布于战场上的尘埃微粒大小的传感器，用于暗中侦察敌方行动。
Healthy sinuses are lined with a thin layer of mucus that traps dust, germs, and other particles in the air.
健康的鼻窦里排列着一层薄薄的鼻涕，这些鼻涕能够吸附灰尘，细菌以及其他空气中的微粒。
Even a telescope in orbit round the earth, like the very successful Hubble telescope, would not be suitable because of the dust particles iron solar system.
即使是一台放置在围绕地球的轨道上的望远镜——如非常成功的哈勃望远镜——也因为太阳系中的尘埃微粒而无法胜任。
Radiation from the sun pushes dust particles away from the coma, forming a dust tail, while charged particles from the sun convert some of the comet's gases into ions, forming an ion tail.
从太阳而来的辐射，将尘埃粒子吹离彗发，形成尘埃彗尾；同时，来自太阳的带电粒子将一些彗星气体电离成离子，形成离子彗尾。
The number of those particles has dropped as a result of reforestation programs that lessen the dust storms that blew in from deserts.
经过一系列的森林再造，减少了从沙漠吹过来的沙尘暴之后，这类颗粒物浓度已经有所减少。
"Particles of dust and smoke are practically transparent in the microwave range, but the radiation is still strong enough for the source of a fire to be detected," said team leader Nora von Wahl.
“灰尘和烟雾的颗粒实际上在微波范围内是透明的，但辐射仍然很强，足以被检测到火源，”研究组长Nora von Wahl说。
We're also good at seeing big clouds of small particles of dust. ... But in between dust grains up to a millimeter in size and the smallest planets we can see, we're blind.
我们也同样擅长于发现那些一大堆的尘埃...但是如果要去发现那些毫米级的尘埃，和那些我们能看到的最小的行星，我们几乎就成了盲人。
It works at a much lower frequency than the infrared sensors, and is less affected by dust particles.
它比红外传感器的频率要低得多，而且较少受到尘埃粒子的影响。
These particles hit our atmosphere and settle like a thin layer of dust over the planet.
这些粒子撞击我们的大气层，并像薄薄的一层尘埃一样落到地球上。
Astronauts in a spaceship, traveling far above the atmosphere of the earth, are in totally dark space because there are no dust particles or droplets of moisture to reflect the rays of the sun.
宇宙飞船中的宇航员，在距地球大气层很远的上方飞行，完全处于黑暗的宇宙中，因为没有尘埃微粒或小水汽滴去反射太阳的光线。
The air purifier preferably removes dust and other particles from a room, typically in a household environment.
空气清洁器优选地从房间中，典型的在家庭环境中，去除灰尘和其他微粒。
The unit operation, a solid particles of dust and impurities by gravity, inertia diffusion, contact resistance leave, static comprehensive effect, dust settlement piling up in filtering elements.
机组运行时，大量灰尘和固体颗粒杂质由于重力、惯性扩散、接触阻留、静电等综合作用，灰尘沉降堆积在过滤元件上。
The dust particles of dust were shown at a higher magnification than anything outside of Earth that has been imaged before.
这个尘埃的微小颗粒是以一个比以前拍过地球以外的任何东西的显微镜倍数高得多的显微镜拍到的。
In 1907, Einstein likely did not foresee a time when dust-sized particles of glass could be trapped and suspended in air by dual laser beam "optical tweezers."
1907年时，爱因斯坦似乎没能预见到这样的时代，在这个时代，“镭射光钳”发射双重激光，从而困住灰尘一般大小的玻璃微粒，使它们悬浮在空中。
Additional dust collector installed to avoid plastic particles splashing and provide a clean environment.
干燥机架装集尘器可避免塑料粒子四处飞扬，保持环境清洁。
Seven particles of dust stirred up by a cow, each of which was the length of
奶牛尘七粒，每粒这样的尘埃等于
It is cloudy phenomenon because the air suspension with a lot of smoke, dust particles encountered water formed, make the line of sight fuzzy and lead to decreased visibility.
这是因为随着浑浊现象的大量烟雾的空气悬架，尘埃颗粒会形成的水，使视线模糊，导致能见度降低。
The phones do a little dance, allowing the dust and cotton particles to work their way into the nooks and crannies of the phones.
这种手机做一些舞蹈，让灰尘和棉花颗粒工作到角落和缝隙的手机的道路。
The answer is that the ring is very tenuous, made up of a sparse collection of ice and dust particles.
答案是新光环是由非常稀疏的冰粒和尘埃粒子组成的。
Even a telescope in orbit round the earth, like the very successful Hubble telescope, would not be suitable because of the dust particles in our solar system.
即使是一台放置在围绕地球的轨道上的望远镜——如非常成功的哈勃望远镜——也因为太阳系中的尘埃微粒而无法胜任。
They have cleverly adapted a particle accelerator, a van DE Graaf accelerator, to accelerate small dust particles.
他们聪明的改造了一种范德·格拉夫粒子加速器，来加速微小的尘埃颗粒。
The bearings have a layer of seal coating, can stop the 95 per cent of mineral dust particles, which extend the machine wear life.
该轴承有一层密封涂层，可以阻挡95%的矿业尘埃粒子，以此来延长机器磨损寿命。
The dipole effect of the plarized dust particles makes the particles form a dust collective that has chain structure.
粉尘粒子的偶极效应使粒子凝结成具有链式结构的粉尘集合体。
At present, a group of researchers in Asia is studying aerosol particles and their effects on the environment-and they have plenty of dust to work with.
现在亚洲有一批研究人员正在研究悬浮颗粒及其对环境的影响——他们要研究的沙尘可多着呢！
At present, a group of researchers in Asia is studying aerosol particles and their effects on the environment-and they have plenty of dust to work with.
现在亚洲有一批研究人员正在研究悬浮颗粒及其对环境的影响——他们要研究的沙尘可多着呢！
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