英文字典中文字典51ZiDian.com

中文字典辞典英文字典 a b c d e f g h i j k l m n o p q r s t u v w x y z

ph 音标拼音: [p'i'etʃ]

n. ph值

ph值

WordNet (r) 3.0 (2006) (WordNet)

pH
n 1: (from potential of Hydrogen) the logarithm of the
reciprocal of hydrogen-ion concentration in gram atoms per
liter; provides a measure on a scale from 0 to 14 of the
acidity or alkalinity of a solution (where 7 is neutral and
greater than 7 is more basic and less than 7 is more
acidic); [synonym: {pH}, {pH scale}]

The Free On-line Dictionary of Computing (foldoc)

The {country code} for the Philippines.

(1999-01-27)

请选择你想看的字典辞典：

单词	字典	翻译
ph	查看　ph　在百度字典中的解释	百度英翻中〔查看〕
ph	查看　ph　在Google字典中的解释	Google英翻中〔查看〕
ph	查看　ph　在Yahoo字典中的解释	Yahoo英翻中〔查看〕

安装中文字典英文字典查询工具!

中文字典英文字典工具:

选择颜色:

<style type="text/css">#word104_1 br {display:none;}</style>
<form id="word104_1" method="post" action="http://es.goldgoldprice.com/index.php" target="_blank">
<div style="width: 140px;border:1px solid #000;background-color:#ffffff;padding: 0px 0px;margin: 0px 0px;align:center;text-align:center;overflow:hidden;"><div id="xcolor1_1" style="font-size:12px;color:#183a00;line-height:16px;font-family: arial; font-weight:bold;background:#94abf0;padding: 3px 1px;text-align:center;"><a href="http://es.goldgoldprice.com/" alt="英文字典中文字典" title="英文字典中文字典" id="word_name104_1" style="color:#000000;font-size:14px;text-decoration:none;line-height:16px;font-family: arial;" >英文字典中文字典</a></div><table width=100% style='align:center;text-align:left;font-size:12px;background-color:#ffffff;color:#333333;'>
<tr><td style="text-align:center;border:0"><input type=hidden name="word104_hi" value="1">输入中英文单字</td></tr><tr><td style="text-align:center;border:0"><input type="text" name="word104_input" value="" size=10 style="background-color:#ffffff;color:#000;text-decoration:none;font-family: arial;rial;border:1px solid #999;padding:1px!important;"></td></tr><tr style='line-height: 26px;'><td style="text-align:center;border:0"><input type=submit style="background-color:#ccc;color:#000;border:0 none;cursor:pointer;" value="查询字典"></td></tr></table></div>
</form>

英文字典中文字典相关资料:

pH - Wikipedia
In chemistry, pH ( p iː ˈ eɪ tʃ pee-AYCH), also referred to as acidity or basicity, historically denotes "potential of hydrogen" (or "power of hydrogen") [1] It is a logarithmic scale used to specify the acidity or basicity of aqueous solutions
PH | Definition, Uses, Facts | Britannica
PH, quantitative measure of the acidity or basicity of aqueous or other liquid solutions The term, widely used in chemistry, biology, and agronomy, translates the values of the concentration of the hydrogen ion into numbers between 0 and 14 Learn more about pH
What Is pH? The pH Formula Equation - ChemTalk
pH is a measure of how basic or acidic a substance is pH has a range of 0-14 A pH greater than 7 means the substance is basic A pH less than 7 means the substance is acidic
pH Scale: Definition, Chart, Values, Range - Chemistry Learner
pH is a measure of how acidic or basic a substance is It takes a numerical value between 0 and 14 that measures the relative amount of free hydrogen and hydroxyl ions in water Water having more hydrogen ion concentration than hydroxyl is acidic
What Is pH and What Does It Measure? - ThoughtCo
pH is a measure of how acidic or basic a solution is, from 0 to 14 pH is important for chemical reactions in areas like medicine, cooking, and agriculture Scientists use pH meters and indicators to measure the pH of solutions accurately
What is pH? | US EPA - U. S. Environmental Protection Agency
What is pH? Acidic and alkaine (or "basic") are two extremes that describe substances, usually liquids or chemicals, just like hot and cold are two extremes that describe temperature A substance that is neither acidic nor alkaline is neutral
pH as a Measure of Acid and Base Properties
The kidney regulates the pH by balancing the concentrations of hydrogen and bicarbonate ions If the pH of the blood gets outside the range 7 35 to 7 45 the results can be serious and even fatal If you measure the pH of tap water with a pH meter, you may be surprised at how far from a pH of 7 it is because of dissolved substances in the water
What Does PH Mean? | Understanding Acidity Levels
pH measures the acidity or alkalinity of a solution Scale ranges from 0 (acidic) to 14 (alkaline) Neutral pH is exactly 7, indicating balance pH affects chemical reactions and biological processes Regular testing is crucial for soil and water health
Definition of pH - Khan Academy
Definition of pH - Khan Academy
What is pH? - BYJUS
What is pH? pH Definition pH is defined as the negative logarithm of H + ion concentration Hence the meaning of the name pH is justified as the power of hydrogen We know that all the acids and bases do not react with the same chemical compound at the same rate Some react very vigorously, some moderately while others show no reaction

中文字典-英文字典 2005-2009