| photometer |
(F?
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
|
|---|---|
| photomultiplier tube |
a vacuum tube that converts electromagnetic radiation signals into electrical pulses, consisting of a light-sensitive surface that emits electrons when light is incident on it, the electrons then passing through successive stages with electron multiplication at each stage.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
|
| phonological disorder |
[DSM-IV] a communication disorder of unknown etiology, characterized by failure to use age- and dialect-appropriate sounds in speaking, with errors occurring in the selection, production, or articulation of sounds. The most common errors are omissions, substitutions, and distortions of speech sounds.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
|
| photodynamic sensitization |
the increased lethal effects of light on microorganisms when certain dyes are present in the solution.
Ãâó: www.mercksource.com/pp/us/cns/cns_hl_dorlands.jspz...
|
| phoresy |
In ecology, commensalism is an interaction between two living organisms, where one creature benefits and the other is neither harmed nor helped. As with all ecological interactions, commensalisms vary in strength and duration from intimate, long-lived symbioses to brief, weak interactions through intermediaries. The term commensalism derives from the Latin com mensa, meaning sharing a table. ...
Ãâó: en.wikipedia.org/wiki/Phoresy
|