semipermeable

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数据源: ai_enrichment
半透的,指允许某些物质(如溶剂)通过而阻挡其他物质(如溶质)的膜或材料,常用于描述生物膜或过滤系统。

用法要点

形容词用法

通常用作形容词,修饰名词如膜、屏障或材料,描述其选择性渗透的特性,常见于科学或技术语境。

• semipermeable membrane
• semipermeable barrier
• semipermeable material

介词搭配

常与介词'to'连用,表示对特定物质的渗透性,例如'semipermeable to water',意为对水是半透的。

• semipermeable to ions
• semipermeable to gases
• semipermeable to small molecules

语域说明

主要用于学术、科学、工程或医学领域,如生物学、化学或环境科学,日常对话中较少使用,属于专业术语。

• in cell biology
• in filtration systems
• in medical applications

句型结构

常见于描述性句子中,作为定语修饰主语或宾语,例如'The membrane is semipermeable.'或'We use a semipermeable filter.'

• The layer acts as a semipermeable barrier.
• This material is semipermeable to solvents.
• Semipermeable membranes are key in osmosis.

基础例句

In science class, we learned that cell membranes are semipermeable to control what enters and exits.

在科学课上,我们学到细胞膜是半透的,以控制物质的进出。

This water filter uses a semipermeable layer to remove impurities while letting clean water through.

这个水过滤器使用半透层来去除杂质,同时让干净的水通过。

When making jam, a semipermeable cover helps steam escape without letting bugs in.

制作果酱时,半透的盖子有助于蒸汽逸出,同时防止虫子进入。

The doctor explained that dialysis relies on a semipermeable membrane to filter blood.

医生解释说,透析依赖于半透膜来过滤血液。

高级例句

In reverse osmosis systems, semipermeable membranes are crucial for desalinating seawater by allowing water molecules to pass while blocking salts.

在反渗透系统中,半透膜对于海水淡化至关重要,它允许水分子通过而阻挡盐分。

The research paper discusses how semipermeable barriers in environmental engineering can selectively filter pollutants from wastewater.

这篇研究论文讨论了环境工程中的半透屏障如何选择性地过滤废水中的污染物。

During the business meeting, the team proposed using semipermeable materials in the new product design to enhance durability and functionality.

在商务会议中,团队提议在新产品设计中使用半透材料,以增强耐用性和功能性。

In pharmaceutical applications, semipermeable capsules are designed to control drug release rates by allowing gradual diffusion.

在制药应用中,半透胶囊被设计用于通过逐渐扩散来控制药物释放速率。

高频搭配

adjective

semipermeable membranesemipermeable barriersemipermeable layersemipermeable materialsemipermeable filter

verb

act as semipermeablefunction as semipermeablebecome semipermeableuse semipermeabledesign semipermeable

noun

property of semipermeabilityconcept of semipermeabilityapplication of semipermeablerole of semipermeabletype of semipermeable

preposition

semipermeable to watersemipermeable to ionssemipermeable to gasessemipermeable to solutessemipermeable in systems

phrase

selectively semipermeablepartially semipermeablehighly semipermeablesemipermeable by naturesemipermeable under conditions

常见错误

❌ 错误:The wall is semipermeable for air.
✓ 正确:The wall is semipermeable to air.

错误使用了介词'for',正确应用'to'来表示对某物质的渗透性,因为'semipermeable'常与'to'搭配描述允许通过的物质。

❌ 错误:This is a semipermeable.
✓ 正确:This is a semipermeable membrane.

错误地将'semipermeable'用作名词,它主要作为形容词,需要修饰一个名词如'membrane'或'barrier'来构成完整短语。

近义词辨析

permeable

'permeable'表示允许物质通过,但可能没有选择性;而'semipermeable'强调部分渗透,有选择性阻挡某些物质。

A permeable membrane lets all small molecules through, but a semipermeable one might block ions while allowing water.

selectively permeable

'selectively permeable'与'semipermeable'含义非常接近,都指有选择性的渗透,但'semipermeable'更常用,且'semipermeable'可能隐含部分阻挡,而'selectively permeable'更强调选择过程。

Both terms describe membranes that allow some substances to pass: semipermeable is often used in osmosis, while selectively permeable is common in biology contexts.