Similar words: multinational corporation, oration, peroration, adoration, decoration, evaporation, exploration, corporation. Meaning: ['pɜrfə'reɪʃn /'pɜː-] 
n. 1. a line of small holes for tearing at a particular place 2. a hole made in something 3. the act of punching a hole (especially a row of holes as for ease of separation).
n. 1. a line of small holes for tearing at a particular place 2. a hole made in something 3. the act of punching a hole (especially a row of holes as for ease of separation). 
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31 Water-power deep perforation well can ameliorate perforation completion and reduce skin factor of pollution during drilling.
32 Results There were 3 types of vessel elements, scalariform vessel, reticulated vessel and pitted vessel, the perforation plates were simple perforation plate.
33 Objective: To study the diagnosis and surgical treatment of esophageal perforation.
34 The design strengthens the perforation of vertical lines: one side, making a contrast with transverse overlapping lines; on the other hand, gaining a balance with deflective force.
35 Objective To explore various techniques of repairing tympanic membrane perforation under endoscope.
36 Herein we report a case of cardiac tamponade secondary to perforation of the superior vena cava by a central venous catheter in an obstetric patient.
37 If a perforation occurs,(sentencedict.com) emergency surgery is needed to close the perforation and to perform a myotomy.
38 And of special attention is to spend cankerous sex colonitis to be in when baric clyster again, have the possibility that causes alvine dilate and perforation.
39 Involvement of the small bowel by primary or metastic neoplasms may occasionally be followed by perforation.
40 Results Of 83 cases, 78 were treated successfully, ureteric perforation occurred in 1case, stones went into kidney in 2 cases, the cure rate was 92.7%.
41 This paper deals with comparative studies of the perforation structures of vessel elements in 88 species of 38 genera of Ranunculaceae.
42 A graphic display system of emulation with the burning surface regression of the star perforation grain on IBM-PC/XT microcomputer is developed.
43 According to the above results, the perforation completion production evaluation software was developed, and the utility model patent was declared.
44 Objective To explore the effect of mending the perforation of nasal septum by shifting the mucoperiosteal flap and perpendicular plate of the ethmoid bone under nasal endoscope.
45 The patients' general conditions improved obviously, neither hematological nor immunological examination changed obviously, nor complications such as esophageal perforation or hematorrhea.
46 Objective To observe the effects of multilayer amniotic membrane transplantation ( AMT ) in corneal perforation.
47 They include bleeding from the site of a biopsy or polypectomy and a tear (perforation) through the lining of the intestinal wall.
48 To summarize the clinical experience of laparoscopic neoplasty in acute gastroduodenal ulcer perforation.
49 A simple polynomial regression for experimental data shows that main flow velocity and perforation flow velocity are main factors resulting in mixture loss under given conditions.
50 Only a few cases of colon perforation during percutaneous nephrolithotomy ( PCNL ) have been reported.
51 If paddy is conformal aftertreatment of velar eyewinker injury is undeserved,(www.Sentencedict.com) have the risk that causes perforation of corneal ulcer down to.
52 Objective To observe the morphosis of traumatic tympanic membrane perforation at acute stage and analyze the influencing factors of surgical intervention.
53 RESULTS: Periampullary perforation was repaired as sphincteroplasty in 2 cases, and with Vicryl 3/0 sutures in 4 cases. The mean duration of operation was 176 minutes.
54 Fecal impaction is a common condition, which may lead to dilatation of bowel loop and perforation of colon in rare cases.
55 Results The foreign bodys in 179 cases were took out successfully without haemorrhage, apnoea, obvious membrana mucosa injury and perforation.
56 Conclusion The technique on the layers of splint with hydroxylapatite and light cure glass ionomer is better than pure hydroxylapatite in the repair furcal perforation.
57 Conclusions: Biologic protein sponge is effective material mending the perforation of eardrum.
58 A 2-year-old boy who used to consume brewer's yeast with multiple perforation of the ascending colon was successfully treated after surgery.
59 The productivity of water-jet deep penetrator well and the filtrational resistance of different perforation parameter are researched .
60 Objective: To probe the clinical value of treating ulcerous perforation with the ZT medical glue under laparoscopy.
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