If your facility incorporates a laminar flow cleanroom, these MAGNEHELIC and PHOTOHELIC differential pressure gauges can help you maintain the positive pressure necessary to block inrushing contaminants that can damage sensitive materials and operations.
The definition of life-history patter is: an organism's pattern of reproduction; may be rapid or slow (short or long).ong (short) life-history patterns are large species that live in more stable environments that usually have slow life-history patterns. Elephants, bears, whales, humans, and plants, such as trees are long lived.
Medical Definition of life history. 1  1a: a history of the changes through which an organism passes in its development from the primary stage to its natural deathb: one series of the changes in a life history. 2  2: the history of an individual's development in his or her social environment.