direct ratio

简明释义

正比

英英释义

例句

1.In finance, profit is often a direct ratio 直接比例 of revenue generated.

在金融中，利润通常是生成收入的直接比例。

2.The cost of production has a direct ratio 直接比例 to the number of units produced.

生产成本与生产单位数量成直接比例。

3.The height of the building is in a direct ratio 直接比例 to its structural integrity.

建筑物的高度与其结构完整性成直接比例。

4.The speed of the car is in a direct ratio 直接比例 to the amount of fuel consumed.

汽车的速度与消耗的燃油量成直接比例。

5.In this experiment, the temperature increase is a direct ratio 直接比例 to the time the heater is on.

在这个实验中，温度的升高与加热器开启的时间成直接比例。

作文

In our daily lives, we often encounter various mathematical concepts that help us understand the world around us. One such concept is the direct ratio, which refers to a relationship between two quantities where an increase in one quantity results in a proportional increase in the other. This principle is fundamental in fields such as physics, economics, and even cooking, where precise measurements are crucial. To illustrate the idea of a direct ratio more clearly, let’s consider a simple example involving speed. If a car travels at a constant speed of 60 miles per hour, the distance it covers is directly proportional to the time spent traveling. For instance, if the car travels for 1 hour, it covers 60 miles; if it travels for 2 hours, it covers 120 miles. Here, we can see that the distance traveled and the time spent are in a direct ratio: for every hour, the distance increases by 60 miles. Understanding direct ratios is not only limited to theoretical applications but also has practical implications in everyday activities. For example, when cooking, the ingredients must be measured accurately to achieve the desired taste. If a recipe calls for 2 cups of flour for every cup of sugar, the relationship between flour and sugar is a direct ratio. If you decide to double the amount of sugar to 2 cups, you must also double the flour to 4 cups to maintain the same flavor balance. In economics, the concept of direct ratio plays a significant role in understanding relationships between supply and demand. If the price of a product increases, the demand may decrease, but the relationship between price and demand can sometimes be a direct ratio in certain scenarios. For instance, if a company decides to increase the price of a product by 10%, and the sales decrease by 10%, this reflects a direct ratio between price and demand: as one goes up, the other comes down proportionally. Moreover, in the field of science, particularly in chemistry, direct ratios are crucial when dealing with chemical reactions. The law of conservation of mass states that matter cannot be created or destroyed, which implies that in a chemical reaction, the reactants and products are in a direct ratio. For example, if two molecules of hydrogen react with one molecule of oxygen to produce water, the ratio of hydrogen to oxygen is a direct ratio of 2:1. This understanding helps chemists predict the outcomes of reactions and ensure that they use the correct proportions of substances. In conclusion, the concept of direct ratio is an essential part of mathematics that extends far beyond mere numbers. It helps us comprehend various phenomena in our lives, from driving a car to cooking a meal and analyzing economic trends. By recognizing the significance of direct ratios, we can make informed decisions and better understand the relationships between different variables in our world.

在我们的日常生活中，我们经常遇到各种数学概念，这些概念帮助我们理解周围的世界。其中一个概念是直接比例，它指的是两个数量之间的一种关系，其中一个数量的增加会导致另一个数量的按比例增加。这一原理在物理学、经济学甚至烹饪等领域是基础，因为精确的测量至关重要。 为了更清楚地说明直接比例的概念，让我们考虑一个涉及速度的简单例子。如果一辆车以每小时60英里的恒定速度行驶，那么它所覆盖的距离与旅行时间成正比。例如，如果汽车行驶1小时，则覆盖60英里；如果行驶2小时，则覆盖120英里。在这里，我们可以看到，行驶的距离和花费的时间是一个直接比例：每小时，距离增加60英里。 理解直接比例不仅限于理论应用，还在日常活动中具有实际意义。例如，在烹饪时，必须准确测量食材，以实现所需的味道。如果一个食谱要求每杯糖使用2杯面粉，那么面粉和糖之间的关系就是直接比例。如果你决定将糖的量加倍到2杯，那么你也必须将面粉加倍到4杯，以保持相同的味道平衡。 在经济学中，直接比例的概念在理解供需关系时发挥着重要作用。如果产品的价格上涨，需求可能会下降，但在某些情况下，价格与需求之间的关系有时可以是直接比例。例如，如果一家公司决定将产品价格提高10%，而销售额下降10%，这反映了价格与需求之间的直接比例：当一个上升时，另一个按比例下降。 此外，在科学领域，特别是化学中，直接比例在处理化学反应时至关重要。质量守恒定律表明，物质不能被创造或销毁，这意味着在化学反应中，反应物和生成物之间存在直接比例。例如，如果两个氢分子与一个氧分子反应生成水，那么氢与氧的比例就是2:1的直接比例。这种理解帮助化学家预测反应的结果，并确保他们使用正确的物质比例。 总之，直接比例的概念是数学的一个基本部分，远远超出了数字本身。它帮助我们理解生活中的各种现象，从开车到烹饪，再到分析经济趋势。通过认识到直接比例的重要性，我们可以做出明智的决策，更好地理解我们世界中不同变量之间的关系。