当火球冷却时，内部的气化物质压缩形成固态微粒云。
As the fireball cools, the vaporized materials in it condense to form a cloud of solid particles.
热与冰的交互作用把岩浆雾化成比通常的火山灰更为纯净的微粒，同时，它产生的蒸气云把火山灰送到了比通常更高的高空。
The interaction of heat and ice atomized the magma into much finer particles than is typical, and created a steam cloud that sent the ash higher than usual into the air.
人们认为这些离子有助于产生被称作气溶胶的各种新微粒，而且当气溶胶的体积增大到一定规模，它便成了云滴形成的“温床”。
These ions are thought to help create new particles called aerosols and, when aerosols grow above a certain size, they become the seeds around which cloud droplets form.
划过海洋云层明亮的黄色弧线是船舶的航迹——那是些由水蒸汽与船舶排放出来的无数污染微粒凝结而成的云。
The bright yellow arcs that streak the marine cloud layer are ship tracks—clouds that form when water vapor condenses onto the myriad tiny pollution particles in ship exhaust.
科学家们很早之前就发现，诸如煤烟、灰尘和其他细小的微粒，能改变云体的密度及大气的辐射平衡。
Scientists have known for a long time that aerosols such as soot, dust and other small particulate matter, alter cloud density and the radiative balance of the atmosphere.
由于降水取决于云滴相互碰撞并凝聚成更大更重的水滴，海洋云层中若存在大量的微粒还会推迟降水的发生。
In Marine layer clouds, an abundance of small particles may also delay the onset of precipitation, which depends on cloud droplets colliding and coalescing into larger, heavier drops.
而当云体温度低并且含水量很少时，微粒并不能增加云体的厚度和降水强度。
In contrast, aerosols did not increase the thickness or precipitation intensity of clouds which had cold bases and no ice.
微粒的稀缺意味着云滴会形成得相对更大些。
The scarcity of particles means that the droplets that do form grow relatively large.
同时，因为它们是小液滴和冰晶形成需要的凝结核，因此尘埃微粒还能在云微物理学层面给云层带来改变。
Aerosols also affect cloud microphysics because they act as nuclei around which water droplets or ice forms.
研究人员认为一旦旋风、水和冰将带电微粒彼此分开，风暴即进入充电状态，产生被极度充电的云区。
Researchers believe storms become electrically charged when swirling wind, water and ice separate charged particles from one another, creating regions of cloud that are strongly charged.
气阀微粒提取器现在有了气云追踪效果，当然你得把它放包里。各种眼镜上的气云追踪效果移除。---野外想抽气不用特意换眼镜了。
Mote Extractor now has innate tracking for gas clouds while it is in your inventory. Tracking of gas clouds has been removed from goggles.
因此电子不能描述为空间所处位置的微粒，只能认为负电荷占整个轨道扩散开来的“云”。
Therefore, electrons cannot be pictured as localized particles in space but rather should be thought of as" clouds" of negative charge spread out over the entire orbit.
由玻璃质的、粗糙的岩石微粒构成的火山灰云不仅堵塞发动机，还会磨损挡风玻璃，损坏飞机导航与通讯系统。
By glassy, the eruption cloud that coarse rock particle forms jams not only engine, still can wear away windshield, attaint plane navigation and communication system.
尽管我们认为夜光云由裹着冰的小微粒组成，但仍有许多未知有待研究。
Although noctilucent clouds are thought to be composed of small ice-coated particles, much remains unknown about them.
尽管我们认为夜光云由裹着冰的小微粒组成，但仍有许多未知有待研究。
Although noctilucent clouds are thought to be composed of small ice-coated particles, much remains unknown about them.
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