pH
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abbr. 酸碱度符号（描述氢离子活度的）
abbr.
酸碱度符号；(=public health)公共卫生；
英英释义
pH[ ,pi: 'eitʃ ]
n.(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)
同义词：pH scale
词组短语
ph valuePH值，酸碱度
ph meter酸度计；氢离子计
ph indicator酸碱指示剂
双语例句
用作名词(n.)
Despite this diversity and the fact that certain organisms can grow at extremes of the pH scale, generalities can be made.
纵然有差异而事实上有些生物是可以在极端的酸碱度范围上生长，仍可以得到一些归纳结果。
High temperatures or extremes of pH make MAbs unravel.They typically expire in weeks unless stored near freezing temperatures.
高温和极端的酸碱度都会使抗体瓦解，如果没有冰冻保存，通常数星期就会坏掉。
权威例句
THE USE OF LEAD CITRATE AT HIGH pH AS AN ELECTRON-...Learning from delayed rewards (Ph.D. dissertation)
The effect of pH on the affinities of enzymes for substrates and inhibitors
Potential-pH Diagrams. (Book Reviews: Atlas of Electrochemical Equilibria in Aqueous Solutions)
Thermo- and pH-responsive polymers in drug delivery.
The technology acceptance model for empirically testing new end-user information systems: theory and results [Ph.D. thesis]
Fluorescence probe measurement of the intralysosomal pH in living cells and the perturbation of pH by various agents.
St George-Hyslop PH: Cloning of a gene bearing missense mutations in early-onset familial Alzheimer's disease
Structural organization of the bcr gene and its role in the Ph' translocation.
Diatoms and pH Reconstruction
pH
1909, from German PH, introduced by S.P.L. Sörensen, from P, for German Potenz "potency, power" + H, symbol for the hydrogen ion that determines acidity or alkalinity.
ph
now in English usually representing "f," originally it was the combination used by Romans to represent Greek letter phi (cognate with Sanskrit -bh-, Germanic -b-), which at first was an aspirated "p," later the same sound as German -pf-. But by 2c. B.C.E. had become a simple sound made by blowing through the lips (bilabial spirant). Roman "f," like modern English "f," was dentilabial; by c. 400, however, the sounds had become identical and in some Romanic languages (Italian, Spanish), -ph- regularly was replaced by -f-. This tendency took hold in Old French and Middle English, but with the revival of classical learning the words subsequently were altered back to -ph- (except fancy and fantastic), and due to zealousness in this some non-Greek words in -f- began to appear confusedly in -ph-, though these forms generally have not survived.
1. The reaction should be buffered to a pH of between 6 and 11.
应使反应缓冲到ph值为6～11。
-- 来源 -- 英汉 - 辞典例句
2. Minimum zinc solubility is in the PH range 6.0 to 8.0.
土壤ph值为6．0-8．0时，锌的溶解度最
-- 来源 -- 英汉 - 辞典例句
3. A buffer system resists a change in pH.
缓冲系统对ph的变化是有耐受能力的。
-- 来源 -- 英汉 - 辞典例句
4. "Ph. D." signifies "Doctor of Philosophy."
"ph. D."意为"哲学博士"。
-- 来源 -- 英汉 - 辞典例句
5. A solution which resists pH changes is known as a buffer solution.
能够阻止ph值变化的溶液称为缓冲溶液。
-- 来源 -- 英汉 - 辞典例句
6. The inflection point at this PH is barely detectable.
在此ph值下，拐点不易发现。
-- 来源 -- 英汉 - 辞典例句
7. At waste pH below 4, the oxidizing power of the chromic acid begins to attach the resin.
当废水ph值低于4时，铬酸的氧化力开始吸附在树脂上。
-- 来源 -- 英汉 - 辞典例句
8. The first consideration in selecting a buffer is pH value.
在选择缓冲剂时第一考虑是它的ph值。
-- 来源 -- 英汉 - 辞典例句
9. This PH is termed isoelectric point, at which proteins show their minimum solubility.
这个ph称为等电点，蛋白质在这一点上溶解度最
-- 来源 -- 英汉 - 辞典例句
10. That word is spelt with a PH, not an F.
那个字里的f音拼作ph而不是F.
-- 来源 -- 英汉 - 辞典例句
pH
