percentage by volume

简明释义

体积百分率

英英释义

例句

1.The wine label indicates that the alcohol content is 12% by volume.

酒瓶标签显示酒精含量为12%按体积计算。

2.For this cocktail, mix 40% by volume of juice with 60% of soda.

对于这款鸡尾酒，混合40%按体积计算的果汁和60%的苏打水。

3.The paint can specifies a 20% by volume dilution with water.

油漆桶上说明需用水稀释20%按体积计算。

4.In this recipe, you need to add 30% by volume of the vinegar to the salad dressing.

在这个食谱中，你需要在沙拉酱中添加30%按体积计算的醋。

5.The manufacturer states that the solution contains 5% by volume of active ingredients.

制造商声明该溶液含有5%按体积计算的活性成分。

作文

Understanding the concept of percentage by volume is essential in various fields, especially in chemistry and cooking. The term refers to the concentration of a substance in a mixture, expressed as a percentage of the total volume. For instance, when making a solution, if we say that there is a 10% salt solution, it means that 10 milliliters of salt is dissolved in 90 milliliters of water, resulting in a total volume of 100 milliliters. This simple yet powerful concept helps us quantify how much of one component exists relative to the entire mixture.In the culinary world, the percentage by volume is often used to describe the proportions of ingredients in recipes. For example, when preparing a salad dressing, a recipe might call for 30% vinegar and 70% oil. This means that for every 100 milliliters of dressing, 30 milliliters are vinegar, while the remaining 70 milliliters are oil. Understanding these proportions ensures that the flavor balance is maintained, allowing for a delicious final product.Moreover, in the field of chemistry, the percentage by volume is crucial when preparing solutions for experiments. Chemists need to know the exact concentration of reactants to achieve desired reactions. For example, if a chemist prepares a 5% ethanol solution, they must accurately measure 5 milliliters of ethanol and dilute it with enough water to reach a total volume of 100 milliliters. Such precision is vital for the reproducibility of experiments and the validity of results.The application of percentage by volume extends beyond cooking and chemistry. In industries like pharmaceuticals, the percentage by volume helps ensure that medications are formulated correctly. A liquid medication may specify that it contains 2% active ingredient by volume, meaning that in 100 milliliters of the medication, 2 milliliters are the active compound, while the rest is composed of solvents or fillers. This kind of information is critical for both efficacy and safety in drug administration.Additionally, understanding percentage by volume can assist individuals in daily life, such as when diluting cleaning products or mixing paints. If a cleaning solution recommends a dilution of 20% concentrate, this means that for every 100 milliliters of the final solution, 20 milliliters should be the concentrated cleaner. Miscalculating these percentages could lead to ineffective cleaning or even damage to surfaces.In conclusion, the concept of percentage by volume is a fundamental aspect of many disciplines, including cooking, chemistry, and industry. It provides a clear method for expressing concentrations and proportions, facilitating accurate measurements and effective communication. By mastering this concept, individuals can enhance their understanding of mixtures and solutions, leading to better outcomes in their respective fields. Whether you are a chef perfecting a recipe, a chemist conducting experiments, or a consumer mixing solutions, grasping the significance of percentage by volume will undoubtedly prove beneficial in your endeavors.

理解体积百分比的概念在多个领域中至关重要，特别是在化学和烹饪中。这个术语指的是混合物中某种物质的浓度，以总体积的百分比表示。例如，当我们说有一个10%的盐溶液时，这意味着10毫升的盐溶解在90毫升的水中，总体积为100毫升。这个简单而强大的概念帮助我们量化一个成分相对于整个混合物的存在量。在烹饪世界中，体积百分比常用于描述食谱中成分的比例。例如，在准备沙拉酱时，食谱可能要求30%的醋和70%的油。这意味着每100毫升的沙拉酱中，30毫升是醋，而其余的70毫升是油。理解这些比例确保了风味的平衡，使最终产品美味可口。此外，在化学领域，体积百分比在准备实验用溶液时至关重要。化学家需要知道反应物的确切浓度以实现所需的反应。例如，如果一位化学家准备一个5%的乙醇溶液，他们必须准确测量5毫升的乙醇，并稀释至总容量为100毫升。这样的精确性对实验的可重复性和结果的有效性至关重要。体积百分比的应用不仅限于烹饪和化学。在制药等行业中，体积百分比有助于确保药物的配方正确。液体药物可能会指定含有2%活性成分，这意味着在100毫升的药物中，2毫升是活性化合物，其余部分由溶剂或填充剂组成。这类信息对药物的有效性和安全性至关重要。此外，理解体积百分比可以帮助个人在日常生活中，例如在稀释清洁产品或混合油漆时。如果清洁溶液建议稀释到20%的浓缩液，这意味着在最终溶液的每100毫升中，20毫升应该是浓缩清洁剂。错误计算这些百分比可能导致清洁效果不佳，甚至损坏表面。总之，体积百分比的概念是许多学科的基本方面，包括烹饪、化学和工业。它提供了一种明确的方法来表达浓度和比例，促进准确的测量和有效的沟通。通过掌握这一概念，个人可以增强对混合物和溶液的理解，从而在各自的领域中获得更好的结果。无论你是一个完美食谱的厨师、一位进行实验的化学家，还是一个混合溶液的消费者，理解体积百分比的重要性无疑会在你的努力中带来好处。