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单词 porous
释义

porous /ˈpɔːrəs//ˈpɔːrəs/

英汉-汉英词典
adj. 能渗透的;有气孔的;多孔渗水的
名 词: porousness
词组 | 习惯用语
porous media 多孔介质;漏失通道
porous medium 多孔介质;疏松介质
porous structure 多孔结构;多孔构造
porous material 多孔材料;多孔性材料;疏松材料
porous ceramics 多孔陶瓷,多孔性陶瓷
porous body 多孔体
porous membrane 多孔膜,多孔薄膜
porous brick 多孔砖;多孔性砖
porous layer 多孔岩层;多孔质层
porous concrete 多孔混凝土
porous rock 多孔岩石,多孔岩
英语例句库
  1. He added sand to the soil to make it more porous.
    他往土里掺沙子以提高渗水性能。
  2. Porous ceramic materials on the base of strontium zirconate were developed with zirconium dioxide,baddeleyite powder,and granular polysterol.
    采用二氧化锆、斜锆矿粉、碳酸锶及粒状聚苯乙烯制成了锆酸锶多陶瓷材料。
  3. Some people have reported seeing more semivolatile elements in a class of interplanetary dust particles (IDPs) called “chondritic porous” IDPs.
    曾有人报告在一类被称作“多孔球粒陨石”的行星尘埃颗粒(IDPs)中见到了较多的半挥发性元素。
  4. A uniform magnetic field acts perpendicular to the porous surface which absorbs the micropolar fluids with a suction velocity varying with time.
    均匀磁场垂直作用于可以吸收微极流体的多表面,吸引速度随着时间而变化。
  5. SEM showed the porous structure of the CTCP and the seeded BMSCs were well attached to the CTCP with cytoplasmic extensions and lamellipodia.
    扫描电镜下可见材料呈多网状结构,兔骨髓基质细胞紧密贴附在材料表面,细胞可沿材料的孔隙活跃生长。
  6. SEM showed the porous structure of the CTCP and the seeded hPDLCs were well attached to the CTCP with cytoplasmic extensions and lamellipodia.
    扫描电镜下可见材料具有良好的多孔网状结构,人牙周韧带细胞伸出多个伪足样突起,紧密贴附在材料表面,细胞沿材料的孔隙边缘生长并连接成片。
  7. If you look over the element ratios we measured, you might conclude that our comet particles look more like chondritic porous IDPs than CI chondrite meteorites.
    如果你查看我们测定的元素比率,你将得出结论——我们的彗星颗粒看上去更接近多孔球粒陨石IDPs而不是CI球粒陨石。
  8. Adsorbable gases can be separated by porous ceramic membranes under the capillary condensation mechanism of membrane separation, on which prior study was only limited to pure components.
    陶瓷膜在毛细管冷凝传质机理的作用下能够有效地分离吸附性气体。而毛细管冷凝膜分离传质机理的研究还很不充分,目前,文献报道仅局限于纯组分气体的传质模型研究。
  9. As much as 40% of Hyperion could be porous, according to research led by Dr Peter Thomas of the Center for Radiophysics and Space Research at Cornell University published today in the journal Nature.
    康乃尔大学电波物理与太空研究中心的彼得·托马斯主持研究了土卫七。今天发表在《自然》杂志上的研究成果表明,多达40%的土卫七表面为多孔地形。

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原声例句
连线杂志

It's very kind of crumbly and porous.

它非常易碎且多孔

VOA常速英语_亚洲

You know, the mud houses are so porous.

你知道吗,泥屋太透气了。

时代周刊 (Time)

But those walls are increasingly porous.

然而,这些态度已经越来越薄弱了。

TED演讲(视频版)双语精选

Now, the divisions between these five categories are porous.

现在,这五个类别之间的分界是模糊的。

CNN 精选 2015年12月合集

Part of the problem, the country's porous borders.

问题的一部分在于这个国家的边界。

TED演讲(视频版)双语精选

Even their psychological self felt a bit porous at times.

他/她心理上的自我也时常感到千疮百孔

英国学生科学读本

Have you noticed how porous or spongy good bread is?

你有没有注意过, 面包烤得好, 就能呈现非常明显的海绵状结构?

双语版 TED-Ed 演讲精选

Bones might seem rock-solid, but they're actually quite porous inside.

骨头看上去和石块一样坚固,但它们中心其实相当多孔

科学60秒 听力 2014年8月合集

To absorb sunlight, M.I.T. researchers created a porous disc of graphite flakes.

为了吸收阳光,麻省理工学院的研究人员制造了一个多渗水的石墨薄片圆盘。

NPR音讯 2021年3月合集

They say a porous border is another reason people are coming in.

他们表示,边境漏洞百出是移民抵达的另一个原因。

中文百科

孔隙率 Porosity

(重定向自Porous)
多孔陶瓷
粒子尺寸较均一的冲积层(左)比不均一的冲击层(右)的孔隙率要大,因为后者有很多小粒子可以填充大粒子间的孔隙
Effects of sorting on alluvial porosity
Optical method of measuring porosity: thin section under gypsum plate shows porosity as purple color, contrasted with carbonate grains of other colors. Pleistocene eolianite from San Salvador Island, Bahamas. Scale bar 500 µm.

孔隙率英语:Porosity)或孔隙分数是表征材料的孔隙部分的物理量,定义为孔隙的体积与材料总体积的比率,所以总是在0到1之间,用百分数表示,为0到100%之间。由于开孔或与开孔连通的孔隙才能允许液体进入,在应用上更有价值,所以多将开孔所占体积与材料总体积的比值定义为有效孔隙率(effective porosity),有效孔隙率小于等于总孔隙率。有多种方法可以测试材料的孔隙率和有效孔隙率, 孔隙率概念被广泛用于药理学、陶瓷、冶金、材料生产、土壤机理和工程等多方面。

英语百科

Porosity 孔隙率

(重定向自Porous)
Effects of sorting on alluvial porosity
Optical method of measuring porosity: thin section under gypsum plate shows porosity as purple color, contrasted with carbonate grains of other colors. Pleistocene eolianite from San Salvador Island, Bahamas. Scale bar 500 µm.
多孔陶瓷
粒子尺寸较均一的冲积层(左)比不均一的冲击层(右)的孔隙率要大,因为后者有很多小粒子可以填充大粒子间的孔隙

Porosity or void fraction is a measure of the void (i.e. "empty") spaces in a material, and is a fraction of the volume of voids over the total volume, between 0 and 1, or as a percentage between 0 and 100%. Strictly speaking, some tests measure the "accessible void," the total amount of void space accessible from the surface (cf. closed-cell foam). There are many ways to test porosity in a substance or part, such as industrial CT scanning. The term porosity is used in multiple fields including pharmaceutics, ceramics, metallurgy, materials, manufacturing, earth sciences, soil mechanics and engineering.

近义、反义、联想词
近义词
adj.
permeable, porose, leaky

反义词
n.
impermeable, nonporous, tight

联想词
permeable可渗透的;porosity有孔性,多孔性;polymeric聚合的;fibrous纤维的,纤维性的;viscous粘性的;amorphous无定形的;absorbent能吸收的;permeability弥漫;dense浓厚的;silica硅土;thin薄的;
英英词典
porous adj.
  1. able to absorb fluids
    • the partly porous walls of our digestive system
    • compacting the soil to make it less porous
  2. full of pores or vessels or holes

  3. synonymous: poriferous
  4. allowing passage in and out
    • our unfenced and largely unpoliced border inevitably has been very porous

    synonymous: holey
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更新时间:2025/6/17 17:19:03