Rice: rice chaff off process is called "husking" rice husk, rice peel called it "brown rice, brown rice is light brown, for pulling off hull machines called" husker". Hulling process can't get one hundred percent brown rice grain and brown rice mixed together called "grain mixture".

Valley separation: the process of separating grains and brown rice from a mixture of coarse grains is called "Valley rough separation". The machine separating the grains from brown rice is called "rough separator"".

Whitening: brown rice grinding surface, remove light brown layer (cortex and germ), the brown rice became white rice called it "rice" or "rice", run under the light brown powder called "bran powder", the brown rice can be crushed into rice milling process is called "". A machine that turns brown rice into white rice is called a rice mill, and a grinding wheel used for rice milling in a rice machine is called a sand roller".

Polishing: polishing the surface of rice into bright rice grains is called "polished rice" or "polished rice". The rice polished by Cheng Guangliang is called polishing, and polished rice machine is called polishing machine".

There are usually other modern rice milling the foundry, for example in Taiwan during the Japanese colonial period, which is between the soil paddy rice mill in rural fine unit zero. The soil is paddy rice in lieu of mortar.