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(单词翻译:双击或拖选)
pH - a measure of how acid or alkali a solution is. As the pH gets lower, the solution is more acid. At a pH of 7 the solution is neither acid nor alkali. pH is the inverse1 of the logarithm of the concentration of hydrogen ions.
Phagocytosis - the ingestion of small particles, bacteria or viruses into the cell, by engulfing2 it in a vacuole.
Phosphate - a salt in which the negatively charged part is a phosphorus molecule3 joined to four oxygen molecules4 as PO4.
Phospho-proteins - proteins which contain available phosphate groups.
Phospholipids - are the most common lipids in our cell membranes5. The head group contains a phosphate and is readily soluble6 in water. Phospholipids are also found inmatrix vesicles, and they provide the first step in the synthesis of prostaglandins
Planktonic7 - a form of life style in which an organisms floats freely in a fluid without significant attachment8 or association with other living forms.
Plaque9 is a film of bacteria in a matrix of salivary10 and bacterial11 polymers. It can be called a biofilm as it has a complex population of organisms which when mature, reach an ecological12 balance with one another.
1 inverse | |
adj.相反的,倒转的,反转的;n.相反之物;v.倒转 | |
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2 engulfing | |
adj.吞噬的v.吞没,包住( engulf的现在分词 ) | |
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3 molecule | |
n.分子,克分子 | |
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4 molecules | |
分子( molecule的名词复数 ) | |
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5 membranes | |
n.(动物或植物体内的)薄膜( membrane的名词复数 );隔膜;(可起防水、防风等作用的)膜状物 | |
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6 soluble | |
adj.可溶的;可以解决的 | |
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7 planktonic | |
[医] 浮游生物的 | |
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8 attachment | |
n.附属物,附件;依恋;依附 | |
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9 plaque | |
n.饰板,匾,(医)血小板 | |
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10 salivary | |
adj. 唾液的 | |
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11 bacterial | |
a.细菌的 | |
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12 ecological | |
adj.生态的,生态学的 | |
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