Contrails are clouds of ice particles formed around the small particles released from aircraft exhaust.

飞机划过天空时排出的尾气凝成小冰粒，它们周围逐渐聚集了更多冰粒，形成了凝结尾迹。

youdao

I don't think there will be good results - dry substances are not able to have any noticeable reaction with ice particles.

我认为不会产生什么好的效果，因为干物质无法与冰粒起任何明显的反应。

youdao

Also a plan of preparing ice particles continuously has been put forward, and the analyses and calculations are done in terms of theory.

同时提出一连续制备冰粒方案，并对其进行了理论分析及计算。

youdao

It contains many groups of tiny ice particles called snow crystals.

VOA: special.2010.01.05

Sometimes,dry ice particles or liquid propane are used.

VOA: special.2010.01.05

When melting snow crystals or raindrops fall through very cold air, they freeze to form small particles of ice,called sleet.

VOA: special.2010.01.05

For example, you can also take a block of ice and grind it into tiny particles and use that to absorb methane.

FORBES: What Is Dry Water?

Scientists say these particles disturb the monsoon system and exacerbate the melting of snow and ice in the Himalayas.

BBC: South Asian bloc active at climate meeting

Dr Solomon discovered that chemical reactions destroy ozone on surfaces such as the ice crystals within high-altitude 'polar stratospheric clouds' as well as on other atmospheric particles high in the atmosphere.

BBC: News | Sci/Tech | Ozone hole reaches record size