What do you mean by grinding?

Pheasant-this is a rice crushing device. Water hammer mainly refers to water hammer, also known as machine hammer, water rammer, rollover hammer, bucket hammer or drum hammer, which is the result of mechanization of pedal hammer. The power machine of water hammer is a large vertical waterwheel, with several blades on the wheel and some staggered shifting plates on the rotating shaft for shifting the water hammer rod.

A pillar sets up a wooden pole, and a cone-shaped stone is installed at one end of the wooden pole. Rice to be processed or porcelain clay for processing ceramics is placed in the stone mortar below.

The running water impacts the waterwheel to make it rotate, and the shifting plate mortar on the shaft moves the tip of the hammer rod, so that the hammer heads fall to the ground to grind rice together. It is worth noting that the vertical waterwheel is the most suitable and economical application here, just like the horizontal waterwheel often used in waterwheels. Using water pheasant, food can be processed day and night. Xiafang-rice workshop.

Mill-a traditional equipment used to crush stones or other grains, food and other articles, usually by repeated rolling and squeezing friction to turn granular articles into powder. Before the emergence of electronization, it was a common crushing tool and was once spread all over the world.

Extended data:

Another meaning of grinding is twelve earthly branches.

Gengyin Day is the 27th day in China calendar. In the ancient calendar of China, A, B, C, D, E, Ji, G, Xin, Man and Ghost were called "Ten Heavenly Stems", while Zi, Ugly, Yin, Mao, Chen, Si, Wu, Wei, Shen, You, Xu and Hai were called "Twelve Earthly Branches".

They cooperate with each other in a fixed order, with a total of 60 pairs of combinations, forming the chronology, calendar, chronology and calendar.

It is said that the calendar of Shang dynasty is the greatest achievement of the trunk-branch calendar, which is the longest used calendar in the world, and now it is known for sure.

There are documents available for examination. From the 4th day of February in the third year of Lu Yingong in the Spring and Autumn Period (720 BC) to the third year of Xuantong in the Qing Dynasty (191year), it has never been interrupted and confused for more than 2,600 years (19 12 years after the adoption of the first year of the Republic of China,

The day before Geng Yin Day was a shame day, and the day after that was Xin Mao Day. On the five elements of Yin and Yang, the Geng of heavenly stem belongs to the gold of Yang, and the Yin of earthly branch belongs to the wood of Yang, which is Jin Mu's mutual assistance. Geng Yinri's Yin Na's five behaviors are pine and cypress.

Calendar year, calendar month, calendar day and calendar hour are also the basis of China's ancient arts, such as the Round Sea, Purple Peace and the Holy Children's Fair. Japanese trunk branches are the centers of four pillars. Without Japanese trunk branches, China's ancient skills would be gone.

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Baidu Encyclopedia-Geng Yin