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perforation
美音： [?p?:f??re??n] 英音： [?p?:rf??re??n]

第三人稱復(fù)數(shù)：perforations

perforation基本解釋

perforation的意思

名詞穿孔; 貫穿; 針孔; 齒孔

perforation

perforation網(wǎng)絡(luò)解釋

1. 穿孔：3,穿孔(perforation) :約見于 5%的患者,最易發(fā)生于十二指腸潰瘍. 4,出血(hemorrhage) :主要合并癥,表現(xiàn)為潛血陽(yáng)性或黑便,嘔血等. 5,癌變(malignant transformation) :十二指腸潰瘍一般不惡變,胃潰瘍患者中發(fā)生癌變者 ≤1%. 四,

2. 射孔：在生產(chǎn)數(shù)據(jù)文件中,有個(gè)Event,它的措施除了有射孔(Perforation)以外,還包括其他的措施嗎?這個(gè)文件中的Top和Bottom是垂深還是井深?其他的工程措施比如堵水、打塞、封隔器、酸化、壓裂應(yīng)該在那里處理,如何處理?

3. 齒孔：還在北京展出過. 許多人收集新票(mint),有人收集四方連(block of four),但是也有人專門收集信銷票(used stamp),因?yàn)楹笳卟拍荏w現(xiàn)收集的樂趣. 當(dāng)然,收集信銷票要講究品相(condition),連齒孔(perforation)都要注意完整.

4. perforation的翻譯

4. 打孔：pelt生毛皮 | perforation打孔 | permanent compression test壓縮永久變形試驗(yàn)

perforation詞典解釋

1. 小孔；小洞；（尤指）紙孔
Perforations are small holes that are made in something, especially in paper.

e.g. Tear off the form along the perforations and send it to Sales...
沿著紙孔撕下表格，寄給銷售部。
e.g. When held to the light the small oblong leaves are seen to possess tiny perforations.
迎著光看時(shí)，就會(huì)發(fā)現(xiàn)橢圓形小葉子上有微小的孔眼。

perforation英英釋義

noun

1. the act of punching a hole (especially a row of holes as for ease of separation)

2. a line of small holes for tearing at a particular place

3. a hole made in something

e.g. a perforation of the eardrum