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pumice    音标拼音: [p'ʌməs]
n. 轻石,浮石
vt. 用浮石磨光

轻石,浮石用浮石磨光

pumice
n 1: a light glass formed on the surface of some lavas; used as
an abrasive [synonym: {pumice}, {pumice stone}]
v 1: rub with pumice, in order to clean or to smoothen


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  • Pumice - Wikipedia
    Scoria differs from pumice in being typically denser With larger vesicles and thicker vesicle walls, scoria often sinks but not always Some scoria especially if it is unusually vesicular or has thinner walls can float for brief periods The difference is the result of the lower viscosity of the magma that forms scoria [citation needed] Reticulite is a type of highly vesicular scoria that
  • Pumice: Formation, Properties, Uses, and Why It’s So Lightweight
    Pumice is a lightweight volcanic rock formed by gas-rich eruptions Explore its formation, physical and chemical properties, and real-world uses
  • Pumice | Volcanic Glass, Uses, Formation, Properties | Britannica
    Pumice, a very porous, frothlike volcanic glass that has long been used as an abrasive in cleaning, polishing, and scouring compounds It is also employed as a lightweight aggregate in precast masonry units, poured concrete, insulation and acoustic tile, and plaster Pumice is pyroclastic igneous
  • Pumice: Igneous Rock - Pictures, Definition More
    Pumice is an extrusive igneous rock with a vesicular texture and very low specific gravity It is used to make lightweight concrete, abrasive products and more
  • Pumice: A Frothy, Light-Colored Volcanic Rock with Many Uses
    Pumice is a textural term for low-density, highly vesiculated, or frothy volcanic rock with a mostly felsic or sometimes intermediate composition
  • What Is Pumice Used For? - Sciencing
    Pumice is a naturally-occurring rock that has many practical applications It can be obtained in large chunks or thin powders While most of the world's supply of pumice is used in construction materials, it is also widely used as an abrasive in cleaning supplies both for personal use and for use around the home
  • Pumice: Identification, Properties Lookalikes
    Pumice is an incredibly lightweight volcanic rock formed through the rapid cooling and depressurization of magma during explosive volcanic eruptions Its porous, frothy structure is due to the gas bubbles trapped inside the lava as it cools, creating a highly vesicular texture
  • Ultimate Guide to Pumice (The Floating Rock!)
    Pumice is one of the stranger stones out there Less dense than water, with a wide variety of both industrial and personal uses, it’s actually the result of violent volcanic eruptions Pumice itself has been used for thousands of years, and is still found in many products to this day But what is it? And how is it formed? Let’s scrape the depths and take a closer look at this offbeat stone
  • PUMICE Definition Meaning - Merriam-Webster
    The meaning of PUMICE is a volcanic glass full of cavities and very low in density that is used especially in powder form for smoothing and polishing
  • What is Pumice? - WorldAtlas
    What is Pumice? Brown pumice stone sourced from volcanic rock 5 Description The word pumice was one derived from the Latin word pumex, meaning "foam" Pumice is a pyroclastic (meaning it is formed from volcanic matter), igneous rock The chemical properties of Pumice vary between deposits, but it is primarily composed of amorphous aluminium silicate (silicon dioxide), aluminium oxide, and





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