watch glass

简明释义

表面皿

英英释义

例句

1.You should clean the watch glass regularly to keep it looking new.

你应该定期清洁表镜以保持其外观如新。

2.The jeweler carefully polished the watch glass to remove any scratches.

珠宝商小心翼翼地抛光表镜以去除任何划痕。

3.The antique watch had a slightly foggy watch glass that needed attention.

这只古董表的表镜有点雾蒙蒙的，需要处理。

4.If the watch glass is cracked, it’s best to replace it immediately.

如果表镜破裂，最好立即更换。

5.He admired the intricate design of the watch through the clear watch glass.

他通过清晰的表镜欣赏手表复杂的设计。

作文

In the world of science and laboratory work, various tools and equipment are essential for conducting experiments and observations. One such tool that plays a crucial role is the watch glass. A watch glass (表面玻璃) is a circular piece of glass that is typically used to cover beakers or evaporating dishes, but it also has several other important functions. This simple yet versatile instrument can be found in almost every laboratory setting, making it an indispensable part of scientific procedures.The primary function of a watch glass is to serve as a lid for containers. When placed over a beaker, it helps to prevent contamination from external elements such as dust or other particles. It also minimizes evaporation, which is particularly important when working with volatile substances. By covering the beaker with a watch glass, scientists can ensure that the integrity of their samples is maintained throughout the experiment.Another significant use of a watch glass is for weighing small quantities of solid substances. When performing precise measurements, chemists often place a small amount of the substance on the watch glass before transferring it to another container. This method not only protects the balance from contamination but also allows for easy handling of the sample, making it a preferred choice in many laboratories.Moreover, a watch glass can be utilized for evaporating small volumes of liquid. When a solution needs to be concentrated, the liquid can be poured onto the watch glass and heated gently. The shallow depth of the watch glass allows for quicker evaporation compared to deeper containers, thus speeding up the process. This property makes it particularly useful in organic chemistry, where concentration of solutions is often required.Furthermore, the watch glass can also be employed as a makeshift palette for mixing small amounts of chemicals or for holding reagents during experiments. Its flat surface provides a convenient area for combining different substances, allowing for easy observation of reactions. This versatility demonstrates the importance of the watch glass in facilitating various laboratory tasks.In addition to its practical applications, the watch glass also serves as a visual aid in experiments. Its transparent nature allows scientists to observe changes occurring within a beaker or between mixed substances without removing the cover. This feature is particularly beneficial when monitoring reactions that may be sensitive to air exposure or contamination.In conclusion, the watch glass (表面玻璃) is a fundamental tool in the realm of scientific research and experimentation. Its multiple functions, including serving as a lid for containers, aiding in the weighing of substances, facilitating evaporation, and providing a surface for mixing, highlight its versatility and importance. Whether in a high school chemistry class or a cutting-edge research facility, the watch glass remains a vital component of laboratory work, showcasing how even the simplest tools can have a profound impact on scientific discovery and education.

在科学和实验室工作中，各种工具和设备对于进行实验和观察至关重要。其中一种在实验中发挥重要作用的工具是表面玻璃。表面玻璃（watch glass）是一种圆形的玻璃片，通常用于覆盖烧杯或蒸发皿，但它还有其他几个重要功能。这种简单而多功能的仪器几乎可以在每个实验室环境中找到，使其成为科学程序中不可或缺的一部分。表面玻璃的主要功能是作为容器的盖子。当放置在烧杯上时，它有助于防止灰尘或其他颗粒等外部元素的污染。它还可以最小化蒸发，这在处理挥发性物质时尤为重要。通过用表面玻璃覆盖烧杯，科学家可以确保在实验过程中样本的完整性得以保持。表面玻璃的另一个重要用途是称量少量固体物质。在进行精确测量时，化学家通常会将少量物质放在表面玻璃上，然后再转移到另一个容器中。这种方法不仅保护了天平免受污染，还便于样本的处理，使其成为许多实验室的首选。此外，表面玻璃还可以用于蒸发少量液体。当需要浓缩溶液时，可以将液体倒入表面玻璃上并轻轻加热。与较深的容器相比，表面玻璃的浅深度允许更快的蒸发，从而加快了过程。这一特性使其在有机化学中尤为有用，因为有机化学中常常需要浓缩溶液。此外，表面玻璃还可以作为混合少量化学品或在实验中盛放试剂的临时调色板。其平坦的表面提供了一个方便的区域来组合不同的物质，便于观察反应。这种多功能性展示了表面玻璃在促进各种实验室任务中的重要性。除了实用应用外，表面玻璃还作为实验中的视觉辅助工具。其透明的特性使科学家能够观察烧杯内或混合物质之间发生的变化，而无需移除盖子。这一特性在监测可能对空气暴露或污染敏感的反应时尤其有益。总之，表面玻璃（watch glass）是科学研究和实验领域中的基本工具。它的多重功能，包括作为容器的盖子、帮助称量物质、促进蒸发以及提供混合表面，突显了它的多功能性和重要性。无论是在高中化学课堂还是尖端研究设施中，表面玻璃始终是实验室工作的关键组成部分，展示了即使是最简单的工具也能对科学发现和教育产生深远影响。