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Mathematical model of dumping beer cup
The mathematical model for dumping beer cups is as follows:

This kind of beer cup is a traditional German-style beer cup. Generally, a lid and a handle are attached to the cup body. Textures are tin, ceramics, porcelain, glass, wood, silver and so on. There are beautiful patterns or pictures on the outside of the cup.

As for why this traditional beer cup has a lid, there is a saying that in the European plague era, for the sake of hygiene and cleanliness, there was a lid on the beer cup. However, most beer glasses are made of glass, with 500 ml and 1000 ml.

In China, this kind of beer cup is generally called "Zha", which comes from the English words draft and jug. But in fact, the Chinese word "Zha" comes from the English word jug, which refers to a pot or jar with a handle. Draft beer refers to draft beer, not specifically beer cups.

The advantage of beer cup is that the inside of the cup is smooth and easy to clean. The outer layer of the cup has a matte effect, which is very good for anti-slip on the hands. Disadvantages of beer cups: they can't keep warm. Generally, beer is mostly chilled beer, which does not have heat preservation characteristics.

The common types of beer cups in China are:

1. Wheat beer cup: flat bottom, high waist, streamlined, big mouth, with a volume of 500ml. Wheat beer is thick and delicious with rich foam. The purpose of wide-mouth cup is to make its bouquet and foam overflow to the mouth of the cup.

2, Pearson Cup: Pearson Cup is specially used for drinking light beer, with a small volume of about 250 ml.

3. Beer cup: also called draft beer cup in China, with a capacity of about 300ml.

4. Pinter Cup: The volume of this beer cup is 1 English pint, which is about 568 ml. Generally used for drinking dark beer and English astringent beer.