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(单词翻译:双击或拖选)
Occlusal wear - loss of enamel1 on the biting surface of the teeth due to the abrasive2 action of chewing natural unprocessed food.
Odontoblast process - the extension of the cy lasm of an odontoblast which remains3 surrounded by dentine during tooth formation. The process is still an active part of the cell and contributes to the production of intratubular dentine in response to ageing, tooth wear or arrested caries.
Odontoblasts- cells lining4 the dental pulp5, derived6 from the dental papilla wich form the dentine of the tooth crown and root. New odontoblasts may become differentiated7 from less specialised pericytes in the pulp.
Occlusal interference - contact between opposing teeth during chewing, which prevents the other teeth touching8. In extreme lateral9 and protrusive10 positions of the jaw11, this would happen in most dentitions and be of no concern. When occlusal interference occurs close to the area of maximum tooth contact, it may be troublesome.
Oncogenes - genes12 which have the capacity if expressed to cause tumour13 formation.
Organelle - a structures within a cell which has a specific structure or function, such as thenucleus, endoplasmic reticulum, golgi apparatus14, lysosomes and mitochondria.. Cell organelles are a feature of eucaryotic cells.
1 enamel | |
n.珐琅,搪瓷,瓷釉;(牙齿的)珐琅质 | |
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2 abrasive | |
adj.使表面磨损的;粗糙的;恼人的 | |
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3 remains | |
n.剩余物,残留物;遗体,遗迹 | |
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4 lining | |
n.衬里,衬料 | |
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5 pulp | |
n.果肉,纸浆;v.化成纸浆,除去...果肉,制成纸浆 | |
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6 derived | |
vi.起源;由来;衍生;导出v.得到( derive的过去式和过去分词 );(从…中)得到获得;源于;(从…中)提取 | |
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7 differentiated | |
区分,区别,辨别( differentiate的过去式和过去分词 ); 区别对待; 表明…间的差别,构成…间差别的特征 | |
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8 touching | |
adj.动人的,使人感伤的 | |
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9 lateral | |
adj.侧面的,旁边的 | |
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10 protrusive | |
adj.伸出的,突出的 | |
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11 jaw | |
n.颚,颌,说教,流言蜚语;v.喋喋不休,教训 | |
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12 genes | |
n.基因( gene的名词复数 ) | |
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13 tumour | |
n.(tumor)(肿)瘤,肿块 | |
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14 apparatus | |
n.装置,器械;器具,设备 | |
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