The stroke order of comparison is: horizontal, vertical, left and vertical hook. The combination of words is competition, proportion and proportion.

1. Competition: Competition is a competitive activity, which usually involves competition between two or more rivals. The purpose of the competition is usually to determine a winner, usually by scoring, timing or other evaluation methods. Competition can involve various activities, such as sports, music, intelligence and so on. Competition can stimulate people's competitive spirit, promote the improvement of skills and help people understand how to compete effectively with others.

2. Proportion: Proportion is a mathematical concept, which is usually used to describe the relationship between two quantities. Proportion is usually expressed by ratio or ratio, such as 3: 2 or 1/4. Proportion can be used to describe the relationship between different objects or phenomena, such as in physics, engineering or economics. In a business environment, ratios can be used to analyze sales data or financial data.

3. Specific gravity: Specific gravity is a statistical concept, which is usually used to describe the importance of a specific part relative to the whole. Specific gravity is usually used to compare the relative sizes of different objects or phenomena, such as in earth science, biology or economics. In a business environment, ratios can be used to analyze market data or financial data. For example, the ratio of market share to total market can help enterprises understand their position in the market.

Ratio type:

1, according to the nature of the ratio: the ratio can be divided into positive ratio, inverse ratio and complex ratio. Proportionality means that the ratio of two quantities is a constant, that is, y=kx(k is a constant); Inverse ratio means that the ratio of two quantities is reciprocal, that is, y=k/x(k is a constant); Complex ratio means that the ratio between two quantities is a combination of several different quantities, that is, y = k1x1+K2x2+…+kxn (k1,k2, …, KN is a constant).

2. According to the composition of the ratio, the ratio can be divided into simple ratio and compound ratio. Simple ratio refers to the ratio of two similar quantities; Compound ratio refers to a compound ratio composed of multiple simple ratios. For example, 3: 4: 5 is a compound ratio, which includes two simple ratios: 3: 4 and 4: 5.

3. According to the application scenario of ratio: ratio can be applied to different fields, such as mathematics, physics, chemistry, biology and so on. In these fields, ratio is used to describe the relative size and relationship between different quantities, such as speed, distance, time, quality and so on.