negative-working diazo
1Phototool — Before getting to know phototool, the manufacture process of printed circuit board shall be introduced.In the conventional manufacture of printed circuit boards (PCBs), a laminate comprising a dielectric substrate having a copper sheet affixed to …
2photography, technology of — Introduction equipment, techniques, and processes used in the production of photographs. The most widely used photographic process is the black and white negative–positive system (Figure 1 >). In the camera the lens projects an image of… …
3test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… …
4Typhoid fever — Infobox Disease Name = Typhoid fever Caption = Salmonella typhi bacteria DiseasesDB = 27829 ICD10 = ICD10|A|01|0|a|00 ICD9 = ICD9|002 ICDO = OMIM = MedlinePlus = eMedicineSubj = oph eMedicineTopic = 686 eMedicine mult = eMedicine2|med|2331 |… …
