membrane

简明释义

英[ˈmembreɪn]美[ˈmembreɪn]

n. （动植物的）膜；（可起防水、防风等作用的）膜状物

复 数 m e m b r a n e s

英英释义

单词用法

同义词

反义词

例句

1.The solubility, stability in gastrointestinal tract, membrane permeability and presystemic metabolism of drugs were the major factors on oral drug absorption.

药物的溶解性，在胃肠道中的稳定性，膜的通透性和全身代谢是影响口服药物吸收的主要因素。

2.That's certainly the case for the cell membrane.

这当然是细胞膜的情况。

3.Of course, a can pass between, pass through, the membrane.

当然，A可以，通过半透膜。

4.I am the permeable membrane.

我是透性膜。

5.Master fluid mosaic model of the cell membrane.

掌握细胞膜的流体镶嵌模型。

6.An expressing vector of major outer-membrane protein of Chlamydia psittaci was constructed.

构建了鹦鹉热衣原体主要外膜蛋白的表达载体。

7.The efficiency of a DMFC is determined by its membrane.

DMFC的性能取决于它的膜。

8.These are substances which specifically latch onto the protein on the cell membrane.

这些是专门黏附在细胞膜蛋白质上的物质。

9.Here's your semi-permeable membrane.

这是你的半透膜。

10.In biology, a membrane can separate different compartments within a cell.

在生物学中，膜可以分隔细胞内的不同区室。

11.The cell's outer layer is known as the plasma membrane.

细胞的外层被称为质膜膜。

12.Osmosis occurs when water moves through a semi-permeable membrane.

当水通过半透性膜时，发生渗透作用。

13.The membrane in the ear helps transmit sound vibrations.

耳朵中的膜帮助传递声音振动。

14.The membrane surrounding the heart is called the pericardium.

围绕心脏的膜叫做心包。

作文

The concept of a membrane (膜) is fundamental in various scientific fields, particularly in biology and chemistry. A membrane can be defined as a selective barrier that allows certain substances to pass while blocking others. This property is crucial for the functioning of cells, as it helps maintain homeostasis by regulating the internal environment of the cell. For instance, the cell membrane (细胞膜) is composed primarily of a phospholipid bilayer, which provides both structure and flexibility to the cell. The hydrophilic heads of the phospholipids face outward towards the aqueous environment, while the hydrophobic tails are tucked inside, away from water. This arrangement creates a semi-permeable barrier that is essential for cellular function.In addition to biological significance, membranes (膜) play a critical role in various industrial processes. For example, in water treatment, membranes are used in reverse osmosis systems to purify drinking water. The membrane (膜) acts as a filter, allowing water molecules to pass through while trapping contaminants such as salts and bacteria. This technology has become increasingly important as the demand for clean water rises globally.Moreover, membranes (膜) are also utilized in the field of energy. Fuel cells, which convert chemical energy into electrical energy, rely on membranes (膜) to separate reactants while allowing ions to pass through. The efficiency of these cells is heavily dependent on the properties of the membrane (膜) used, highlighting the importance of material science in developing better membranes (膜) for energy applications.Understanding the structure and function of membranes (膜) is not only vital for scientists but also for students studying these concepts. In educational settings, learning about membranes (膜) can provide insights into how life operates at a cellular level. For example, students might conduct experiments to observe osmosis, where they can see how water moves across a membrane (膜) and understand the principles behind this process.In conclusion, the study of membranes (膜) encompasses a wide range of applications and implications. From their role in maintaining cellular integrity to their use in industrial processes and energy production, membranes (膜) are integral to both natural and engineered systems. As research continues to advance, the development of new types of membranes (膜) with enhanced properties will likely lead to further innovations in technology and medicine, making it an exciting area of study for future generations. Through understanding membranes (膜), we gain insight into the intricate workings of life and the potential for technological advancements that can benefit society as a whole.

膜的概念在各种科学领域中是基础，特别是在生物学和化学中。膜可以定义为一种选择性屏障，它允许某些物质通过，同时阻止其他物质。这一特性对细胞的功能至关重要，因为它有助于通过调节细胞的内部环境来维持稳态。例如，细胞膜主要由磷脂双层组成，这为细胞提供了结构和灵活性。磷脂的亲水性头部朝外面朝向水相环境，而疏水性尾部则藏在里面，远离水。这种排列创建了一个半透膜，这对细胞功能至关重要。除了生物学意义外，膜在各种工业过程中也起着关键作用。例如，在水处理过程中，膜被用于反渗透系统以净化饮用水。膜作为过滤器，允许水分子通过，同时捕获盐和细菌等污染物。随着全球对清洁水的需求上升，这项技术变得越来越重要。此外，膜还被广泛应用于能源领域。燃料电池将化学能转化为电能，依赖于膜来分隔反应物，同时允许离子通过。这些电池的效率在很大程度上取决于所用膜的性质，这突显了材料科学在开发更好膜方面的重要性。理解膜的结构和功能不仅对科学家至关重要，而且对学习这些概念的学生也很重要。在教育环境中，学习膜可以提供对生命如何在细胞水平上运作的深入了解。例如，学生们可能会进行实验以观察渗透作用，他们可以看到水如何穿过膜并理解这一过程背后的原理。总之，膜的研究涵盖了广泛的应用和影响。从它们在维持细胞完整性方面的作用到它们在工业过程和能源生产中的应用，膜对自然和工程系统都是不可或缺的。随着研究的持续推进，新型膜的开发将可能导致技术和医学上的进一步创新，使其成为未来几代人令人兴奋的研究领域。通过理解膜，我们获得了对生命复杂运作的洞察，以及能够使整个社会受益的技术进步的潜力。