| 词汇 | semipermeable |
| 释义 | semipermeable adjective chemistry specializeduk /ˌsem.iˈpɜː.mi.ə.bəl/ us /ˌsem.iˈpɝː.mi.ə.bəl/ Something, for example a cell membrane, that is semipermeable allows some liquids and gases to pass through it, but not others.（细胞膜等）半渗透性的，半可透性的 Holes, hollows and dips anti-crack aperture blistered chink cranny cratering gauge gouge hollow interstice leak leaky micropore microporosity microporous piercing pinprick shaft thumbhole void semipermeable | American Dictionarysemipermeable adjective[ not gradable ] us/ˌsem·iˈpɜr·mi·ə·bəl, ˌsem·ɑɪ-/ biology, chemistry allowing some liquids and gases, but not others, to pass through Examples of semipermeablesemipermeable Occlusive dressings come as semipermeable films, hydrocolloids, hydrogels, foams, alginates, and powders, pastes, beads and gels. In the semipermeable experiment 13-23% of seeds were buried apparently by dung beetles. Massive callose accumulation is not a general feature of semipermeable layers in seed-covering structures. These are semipermeable membranes manufactured principally for use in water purification or desalination systems. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Diffusion of crude natural gas through special semipermeable membranes and other barriers is another method to recover and purify helium. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Blood flows by one side of a semi-permeable membrane, and a dialysate, or special dialysis fluid, flows by the opposite side. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Another example of a semipermeable membrane is dialysis tubing. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A semipermeable membrane is necessary because it allows water through its membrane while preventing solutes from moving through its membrane. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. One theoretical means would be through an ideal semi-permeable membrane. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. They surround cells and organelles with a semi-permeable barrier that prevents free flow of substances. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Reverse osmosis is theoretically the most thorough method of large scale water purification available, although perfect semi-permeable membranes are difficult to create. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. It is similar to osmosis in that they both involve the semipermeable nature of the cell membrane. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. Ideally, a wall may be declared adiabatic, diathermal, impermeable, permeable, or semi-permeable. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A semipermeable membrane is a thin layer of material that contains holes of various sizes, or pores. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. A typical thermodynamic process consists of a redistribution of a conserved quantity between a system and its surroundings across an unchanging semi-permeable wall between them. From Wikipedia This example is from Wikipedia and may be reused under a CC BY-SA license. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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