The micro grain gold can be divided into primary ore and oxidized ore according to the different working performance.

根据矿石加工技术性能，可把微细粒金矿分为原生矿和氧化矿。

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A kinetics model of the reduction is established based on the micro-grain model. According to this, the kinetics mechanics of the reduction is put forward.

并基于“粒子模型”获得了还原反应的动力学模型，据此还提出了还原的动力学机理。

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Micro chipping involves a vet inserting a tiny device, about the size of a grain of rice, under the dog's skin.

CNN: Give a dog a cell phone