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beamy    
a. 光亮的,象梁一样的,幅身广阔的

光亮的,象梁一样的,幅身广阔的

beamy
adj 1: broad in the beam; "a beamy cargo ship"
2: radiating or as if radiating light; "the beaming sun"; "the
effulgent daffodils"; "a radiant sunrise"; "a refulgent
sunset" [synonym: {beaming}, {beamy}, {effulgent}, {radiant},
{refulgent}]

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  • pH Scale: Acids, bases, pH and buffers (article) | Khan Academy
    The pH scale is used to rank solutions in terms of acidity or basicity (alkalinity) Since the scale is based on pH values, it is logarithmic, meaning that a change of 1 pH unit corresponds to a ten-fold change in H + ion concentration
  • The pH scale (video) | Acids and bases | Khan Academy
    The pH scale is a convenient way to represent the acidity or basicity of a solution We can calculate the pH of a solution by taking the negative logarithm of the hydronium ion concentration, or pH = -log [H₃O⁺]
  • pH, pOH, and the pH scale (article) | Khan Academy
    Converting [H +] to pH is a convenient way to gauge the relative acidity or basicity of a solution The pH scale allows us to easily rank different substances by their pH value
  • Khan Academy
    Oops Something went wrong Please try again Uh oh, it looks like we ran into an error You need to refresh If this problem persists, tell us
  • pH, acids, and bases review (article) | Khan Academy
    The pH scale is used to rank solutions in terms of how acidic or how basic they are It indicates the concentration of hydrogen ions (H+) and hydroxide ions (OH-) in a solution
  • The pH scale (video) - Khan Academy
    pH measures how acidic or basic a solution is based on the relative amount of charged hydrogen atoms (H⁺) present The pH scale ranges from 0 to 14, with acids below 7, bases above 7, and neutral substances equal to 7
  • Introduction to pH (video) | Khan Academy
    The pH scale is used to determine the acidity or basicity (alkalinity) of a substance Acidic substances have pH values below 7, while basic substances have pH values above 7; neutral substances have a pH of 7 The pH scale is logarithmic, so each step represents a 10-fold change in concentration
  • Definition of pH (video) | Khan Academy
    The pH of a solution is a measure of the molar concentration of hydrogen ions in the solution and as such is a measure of the acidity or basicity of the solution
  • Introduction to pH (video) | Acids and bases | Khan Academy
    The pH scale is used to determine the acidity or basicity (alkalinity) of a substance Acidic substances have pH values below 7, while basic substances have pH values above 7; neutral substances have a pH of 7 The pH scale is logarithmic, so each step represents a 10-fold change in concentration
  • Arrhenius acids and bases (article) | Khan Academy
    From the vinegar in your kitchen cabinet to the soap in your shower, acids and bases are everywhere! But what does it mean to say that something is acidic or basic? In order to answer this question, we need to examine some of the theories describing acids and bases In this article, we will focus on the Arrhenius theory





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