semipermeable

简明释义

英[semɪˈpɜːmɪəb(ə)l]美[ˌsemaɪˈpɜːrmɪəbl]

adj. 半渗透的

英英释义

单词用法

同义词

反义词

例句

1.In the model, gel is considered as a combination of a shell of an elastic semipermeable membrane and a core of a fluid phase.

模型假设凝胶是以凝胶组分及凝胶吸收的溶液为核心，以弹性半渗透膜为壳的复合体。

2.The casings were semipermeable. Small molecules of urea could pass through the membrane while larger blood molecules might not.

肠衣具有半通透性，小分子尿素能够通过肠衣膜，而血液大分子则不能。

3.Hydrogen can be effectively and economically recovered from the refinery gas by cryogenics, pressure swing absorption , or semipermeable membranes.

从炼厂气生产氢气，可以通过深冷法、压力回转吸收法和半透膜法，既溜冰者滑了一个趔趄，但立刻恢复了平衡。

4.Methods Core tablets containing osmotic active agent were prepared by direct compression and spray coated with swelling layer and semipermeable membrane subsequently.

方法粉末直接压片法制备含渗透活性物质的片芯，滚转包衣锅法分别包溶胀层和控释衣层。

5.If we place a semipermeable membrane (like that in a reverse osmosis filter) between sealed bodies of salt water and fresh water, the fresh water will gradually travel through the filter by osmosis.

如果我们把一个半透膜(如，在反渗透过滤器)之间的海水和淡水密封机构，将逐步淡水通过渗透穿过过滤器。

6.The process of reverse osmosis membrane used for the reverse osmosis semipermeable membrane.

反渗透过程所使用的半透膜为反渗透膜。

7.The cell membrane is a semipermeable 半透膜 barrier that allows certain substances to pass while blocking others.

细胞膜是一个半透膜 semipermeable 的屏障，允许某些物质通过，同时阻止其他物质。

8.The process of osmosis occurs through a semipermeable 半透膜 where water moves from an area of low solute concentration to high concentration.

渗透过程发生在一个半透膜 semipermeable 中，水从低溶质浓度区域移动到高浓度区域。

9.In water purification systems, semipermeable 半透膜 membranes are used to filter out impurities.

在水净化系统中，使用半透膜 semipermeable 膜来过滤杂质。

10.Some artificial kidneys use semipermeable 半透膜 filters to cleanse blood by removing waste products.

一些人工肾脏使用半透膜 semipermeable 过滤器通过去除废物来清洁血液。

11.Reverse osmosis uses semipermeable 半透膜 technology to remove contaminants from water.

反渗透使用半透膜 semipermeable 技术去除水中的污染物。

作文

In the world of biology, the concept of a semipermeable membrane plays a crucial role in maintaining the balance of life. A semipermeable membrane is one that allows certain substances to pass through while restricting others. This selective permeability is essential for various cellular processes, including nutrient absorption and waste removal. For instance, the cell membrane, which is primarily composed of lipids and proteins, acts as a semipermeable barrier. It permits water and small molecules to enter and exit the cell, while larger molecules and ions are kept out or require specific transport mechanisms to cross the membrane.The importance of semipermeable membranes can be observed in osmosis, a process where water moves across the membrane from an area of lower solute concentration to an area of higher solute concentration. This movement is vital for maintaining cellular homeostasis. Without a semipermeable membrane, cells would struggle to regulate their internal environment, leading to potential cell damage or death.In addition to biological systems, the concept of semipermeable membranes has practical applications in technology and environmental science. For example, in water purification processes, semipermeable membranes are used in reverse osmosis systems to filter out contaminants from drinking water. The semipermeable nature of these membranes ensures that only pure water molecules can pass through, leaving behind salts, bacteria, and other impurities. This technology has become increasingly important in addressing global water scarcity issues.Moreover, semipermeable membranes also play a significant role in medical applications, particularly in dialysis treatments for patients with kidney failure. In dialysis, a semipermeable membrane separates the blood from a dialysis solution, allowing waste products and excess fluids to be removed from the bloodstream while retaining essential blood components. This lifesaving procedure highlights the critical function of semipermeable membranes in healthcare and patient well-being.In conclusion, the concept of a semipermeable membrane is fundamental to understanding both biological and technological systems. Its ability to selectively allow substances to pass through is vital for maintaining life at the cellular level and has numerous applications in various fields. As we continue to explore the intricacies of semipermeable membranes, we gain valuable insights into the mechanisms that sustain life and the innovations that can enhance our quality of living. The significance of semipermeable membranes cannot be overstated, as they are integral to both natural processes and human-made solutions that address some of the most pressing challenges we face today.

在生物学的世界里，半透膜的概念在维持生命的平衡中起着至关重要的作用。半透膜是指允许某些物质通过，同时限制其他物质的膜。这种选择性通透性对各种细胞过程至关重要，包括营养物质的吸收和废物的排除。例如，细胞膜主要由脂质和蛋白质组成，充当半透膜屏障。它允许水和小分子进出细胞，而较大的分子和离子则被排除或需要特定的运输机制才能穿过膜。半透膜的重要性可以在渗透作用中观察到，这一过程是水从低溶质浓度区域向高溶质浓度区域穿过膜的运动。这一运动对于维持细胞内稳态至关重要。没有半透膜，细胞将难以调节其内部环境，从而导致潜在的细胞损伤或死亡。除了生物系统外，半透膜的概念在技术和环境科学中也具有实际应用。例如，在水净化过程中，半透膜被用于反渗透系统，以过滤饮用水中的污染物。这些膜的半透膜特性确保只有纯水分子能够通过，而盐、细菌和其他杂质则被留在后面。这项技术在解决全球水资源短缺问题上变得越来越重要。此外，半透膜在医疗应用中也发挥着重要作用，特别是在肾衰竭患者的透析治疗中。在透析中，半透膜将血液与透析液分开，允许废物和多余的液体从血液中去除，同时保留重要的血液成分。这一拯救生命的程序突显了半透膜在医疗和患者健康中的关键功能。总之，半透膜的概念对于理解生物和技术系统至关重要。它选择性地允许物质通过的能力对于维持细胞水平的生命及其在各个领域的众多应用至关重要。随着我们继续探索半透膜的复杂性，我们获得了对维持生命机制和可以改善我们生活质量的创新的宝贵见解。半透膜的重要性不容小觑，因为它们是自然过程和人造解决方案的核心部分，这些解决方案应对我们今天面临的一些最紧迫的挑战。