measuring cylinder

简明释义

量筒

英英释义

例句

1.After filling the measuring cylinder, check the meniscus for the correct reading.

填满量筒后，检查液面以获得正确的读数。

2.You should always read the measurement at eye level when using a measuring cylinder.

使用量筒时，始终应在眼平视高度读取测量值。

3.To measure the volume of liquid accurately, use a measuring cylinder.

为了准确测量液体的体积，请使用量筒。

4.The teacher demonstrated how to pour water into a measuring cylinder without spilling.

老师演示了如何将水倒入量筒而不溢出。

5.The laboratory requires a clean measuring cylinder for each experiment.

实验室要求每个实验使用干净的量筒。

作文

In the world of science and experimentation, precision is paramount. One of the most essential tools used in laboratories is the measuring cylinder, which is a common piece of glassware used for measuring the volume of liquids accurately. The measuring cylinder is designed to hold a specific volume of liquid and is marked with graduated scales that allow for precise measurements. This tool is indispensable in various scientific fields, including chemistry, biology, and physics.The design of a measuring cylinder is typically tall and narrow, which helps in minimizing the meniscus effect—this is the curve at the surface of a liquid. When using a measuring cylinder, one must always read the measurement at eye level to ensure accuracy. This practice helps avoid parallax errors, which can occur if the measurement is read from an angle. The cylindrical shape also allows for easy pouring of liquids without spilling, making it a preferred choice for many laboratory tasks.When conducting experiments, the measuring cylinder serves multiple purposes. For instance, it can be used to mix different liquid substances in controlled volumes, allowing scientists to create solutions with precise concentrations. In chemical reactions, having the right volume of reactants is crucial, and the measuring cylinder provides that reliability.Moreover, the measuring cylinder is not limited to just measuring liquids; it can also be used to measure the volume of irregular solids through water displacement. By noting the initial water level in the cylinder, submerging the solid, and then measuring the new water level, one can easily calculate the volume of the solid object. This versatility makes the measuring cylinder a fundamental tool in both educational settings and professional laboratories.In educational environments, students often use the measuring cylinder to learn about the principles of measurement and the importance of accuracy in scientific experiments. It helps them understand how to conduct experiments systematically and reinforces the idea that small errors in measurement can lead to significantly different results. Learning to use a measuring cylinder effectively is often one of the first steps in a budding scientist's education.In conclusion, the measuring cylinder is more than just a simple piece of equipment; it is a vital instrument that embodies the essence of scientific inquiry. Its ability to provide accurate and reliable measurements makes it indispensable in laboratories around the world. Whether in a classroom or a research facility, the measuring cylinder continues to play a crucial role in the pursuit of knowledge and discovery in the sciences. Understanding how to use this tool properly is essential for anyone looking to delve into the world of scientific experimentation and research.

在科学和实验的世界中，精确性至关重要。实验室中使用的最基本工具之一是量筒，这是一种常见的玻璃器皿，用于准确测量液体的体积。量筒旨在容纳特定体积的液体，并标有刻度，使得可以进行精确测量。这个工具在化学、生物学和物理学等多个科学领域中都是不可或缺的。量筒的设计通常是高而窄的，这有助于减少液体表面的弯月面效应——这是液体表面的曲线。在使用量筒时，必须始终在眼平线上读取测量值，以确保准确性。这一做法有助于避免视差误差，这种误差会在测量角度不正确时发生。圆柱形的设计也使得液体的倒出变得容易而不易溢出，这使其成为许多实验室任务的首选。在进行实验时，量筒有多种用途。例如，它可以用于以控制的体积混合不同的液体物质，使科学家能够创建具有精确浓度的溶液。在化学反应中，反应物的体积必须正确，而量筒提供了这种可靠性。此外，量筒不仅限于测量液体；它还可以通过水位排开法测量不规则固体的体积。通过记录初始水位、将固体物体浸入水中，然后测量新的水位，可以轻松计算固体物体的体积。这种多功能性使得量筒成为教育环境和专业实验室中的基础工具。在教育环境中，学生通常使用量筒学习测量原理和科学实验中精确性的重要性。这帮助他们理解如何系统地进行实验，并强化了一个理念：测量中的小错误可能导致显著不同的结果。有效地学习使用量筒往往是一个初学科学者教育的第一步。总之，量筒不仅仅是一件简单的设备；它是一种重要的仪器，体现了科学探究的本质。它提供准确可靠的测量能力，使其在全球的实验室中不可或缺。无论是在课堂上还是研究机构，量筒继续在科学知识和发现的追求中发挥着关键作用。理解如何正确使用这一工具对于任何希望深入科学实验和研究世界的人来说都是必不可少的。