perforation
61perforation — Puka …
62Bezold perforation — perforation of the inner surface of the mastoid bone; see also Bezold abscess …
63root perforation — perforation of the root of a tooth, occurring either iatrogenically during treatment or pathologically from internal resorption …
64perforation gauge — Philately. a marked ruler used to measure the number of perforations per unit length along the borders of a stamp. [1890 95] * * * …
65perforation gauge — noun A device for measuring the number of perforations per 2 centimetre distance along the edge of a postage stamp …
66Perforation strength tester — Устройство для контроля прочности перфорации …
67Perforation suction head — Вакуумная присасывающая головка с отверстиями …
68perforation tooth — noun : tooth 3e …
69Hot needle perforation — or hot pin perforation refers to the placement of holes or apatures in a material using a hot or heated needle or pin. Packaging films are often microperforated in order for the packaged contents to breathe. Other applications include medical to… …
70Corneal perforation — is an anomaly in the cornea resulting from damage to the corneal surface. A corneal perforation means that the cornea has been penetrated, thus leaving the cornea damaged. The cornea is a clear part of the eye which controls and focuses the entry …