一旦这些较大的颗粒大到具有了非平凡重力，他们的增长便会加速。
Once the larger of these particles get big enough to have a nontrivial gravity, their growth accelerates.
在过去的十五年里雾气中的小颗粒、烟尘和汽车尾气是不是也对所诊断出的翻倍增长的糖尿病有所影响呢？
Could small particles from haze, smoke and car exhaust have a hand in doubling the number of diagnosed cases of the disease over the last 15 years?
火焰的高超声速速度缩短了粉末与火焰之间的相互作用时间，而火焰也促使了颗粒增长和涂层分解的低温限制。
The hypersonic velocity of the flame shortens the time of interaction between the powder and flame, while the low temperature of flame limits the grain growth and decomposition of coating.
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