- air space porosity
- 空間孔隙度
English-Chinese dictionary. 2013.
English-Chinese dictionary. 2013.
Air permeability specific surface — The air permeability specific surface of a powder material is a single parameter measurement of the fineness of the powder. The specific surface is derived from the resistance to flow of air (or some other gas) through a porous bed of the powder … Wikipedia
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 0–1, or as a percentage between 0–100%. The term is used in multiple fields including… … Wikipedia
Effective porosity — The term effective porosity lacks a single or straightforward definition. Even some of the terms used in its mathematical description (“Vcl” and “Vsh”) have multiple definitions. However, it is most commonly considered to represent the porosity… … Wikipedia
Characterisation of pore space in soil — Soil is essential to most animals on the earth. It is a relatively thin crust where an even smaller portion contains much of the biological activity. Soil consists of three different phases. A solid phase (≈ 20%) that contains mainly minerals of… … Wikipedia
Earth and Space Sciences — ▪ 1996 Introduction GEOLOGY AND GEOCHEMISTRY In 1995 significant developments took place in the realm of geologic mapping, which provides the foundation for the presentation and comparison of data in the Earth sciences. The most important… … Universalium
Water content — Soil composition by phase: s soil (dry), v void (pores filled with water or air), w water, a air. V is volume, M is mass. Water content or moisture content is the quantity of water contained in a material, such as soil (called soil moisture),… … Wikipedia
interstice — 1. An opening in a rock or soil that is not occupied by solid matter [22]. 2. An opening or space which may be occupied by air, water, or other gaseous or liquid material [22]. Synonymous with void, pore. See also pore; pore space;… … Lexicon of Cave and Karst Terminology
Snow — Snowfall redirects here. For other uses, see Snow (disambiguation) or Snowfall (disambiguation). Snow is a type of precipitation in the form of crystalline water ice, consisting of a multitude of snowflakes that fall from clouds. The process of… … Wikipedia
Types of snow — Hoar frost that grows on the snow surface due to water vapor moving up through the snow on cold, clear nights Types of snow can be designated by the shape of its flakes, description of how it is falling, and by how it collects on the ground. A… … Wikipedia
rock — rock1 rockless, adj. rocklike, adj. /rok/, n. 1. a large mass of stone forming a hill, cliff, promontory, or the like. 2. Geol. a. mineral matter of variable composition, consolidated or unconsolidated, assembled in masses or considerable… … Universalium
Rock — /rok/, n. a male given name. * * * I In geology, a naturally occurring and coherent aggregate of minerals. The three major classes of rock igneous, sedimentary, and metamorphic are based on the processes that formed them. These three classes are… … Universalium