density bottle

简明释义

比重瓶

英英释义

例句

1.Make sure to clean the density bottle thoroughly before using it for a new liquid sample.

在使用密度瓶进行新的液体样本之前，请确保将其彻底清洁。

2.To measure the density of liquids accurately, we used a density bottle.

为了准确测量液体的密度，我们使用了一个密度瓶。

3.In our chemistry lab, each student was assigned a density bottle to conduct experiments.

在我们的化学实验室，每个学生都被分配了一个密度瓶来进行实验。

4.The density bottle is essential for calculating the specific gravity of various substances.

对于计算各种物质的比重，密度瓶是必不可少的。

5.We filled the density bottle with water to determine its density at different temperatures.

我们将水倒入密度瓶中，以确定其在不同温度下的密度。

作文

The study of density is a fundamental concept in physics and chemistry, as it helps us understand the properties of materials. One of the essential tools used in this study is the density bottle, which is specifically designed to measure the density of liquids accurately. A density bottle (密度瓶) typically consists of a glass or plastic container with a precisely calibrated volume. This instrument allows scientists and students alike to perform experiments that explore the relationship between mass and volume, thereby determining the density of various substances.To use a density bottle effectively, one must first fill it with a liquid whose density is to be measured. The bottle is then weighed using a precise balance to determine the mass of the liquid inside. It is crucial to ensure that no air bubbles are trapped in the liquid, as this would lead to inaccurate results. After obtaining the mass, the next step is to measure the volume of the liquid, which is usually indicated by the markings on the bottle itself.Once both the mass and volume are known, calculating the density becomes straightforward. Density is defined as mass divided by volume, and the formula is expressed as:Density = Mass / VolumeBy using the density bottle, students can conduct various experiments to understand how different factors affect density. For example, they might explore how temperature changes influence the density of a liquid. As the temperature increases, most liquids expand, leading to a decrease in density. This phenomenon can be observed through simple experiments using the density bottle.Moreover, the density bottle can also be used to compare the densities of different liquids. By filling the bottle with various liquids, such as water, oil, and alcohol, students can visually observe how these liquids layer based on their densities. This hands-on experience not only reinforces theoretical knowledge but also engages students in practical learning.In addition to educational purposes, the density bottle has applications in various industries, including food and beverage, pharmaceuticals, and environmental science. For instance, in the beverage industry, understanding the density of liquids is crucial for quality control and ensuring product consistency. Similarly, in pharmaceuticals, the density of solutions can indicate the concentration of active ingredients, helping in the formulation of effective medications.In conclusion, the density bottle (密度瓶) serves as an invaluable tool in both educational and professional settings. Its simplicity and effectiveness in measuring the density of liquids make it a staple in laboratories and classrooms around the world. By employing this instrument, individuals can gain a deeper understanding of the physical properties of substances, paving the way for further exploration and discovery in the fields of science and engineering.