The themes for grade 3 will be: Solar System, Healthy Lifestyle, Mixing Air, Life Cycle of a Silk Worm, Community Service, and Cursive Writing.

三年级将学到的主题内容是：太阳系、健康的生活方式、混合气体、蚕的生命周期、社区服务和草写体。

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Particle diameter is an important index for atomizing performance. In order to improve atomizing effect, a new internal mixing air-liquid atomizer has been tested.

雾滴粒径是衡量喷嘴雾化性能的一个重要指标，为了提高喷嘴的雾化效果，对一种新型的内混式气液雾化喷嘴进行了测试。

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Before mixing with the products of combustion, the air is preheated.

空气在与燃烧生成物混合之前要进行预热。

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That's why many balloon retailers are mixing air or other safe, alternate gases with helium to extend the supply through this shortage.

CNN: Don't deflate the party

It works by forcing fuel directly into the combustion chamber of each cylinder to mix air and gas simultaneously at the point of combustion, rather than mixing air and gas in a separate chamber like more conventional engines.

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Its spicy tang floods the air, mixing with the scent of roasted nuts being stirred by an elderly woman and the sweetly rotting smell of a spiky durian fruit being cut with a hatchet.

BBC: The perfect trip: Thailand