دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: According to the characteristic that different substances absorb different light spectrum, it can be used to investigate and survey the molecule structure, kinds and attribution of the organic compounds.

siliceous rock with alternating bands of chalcedony and colored chert.

n: a group of two or more particles held together by strong forces. Aggregates are stable with normal stirring, shaking, or handling;they may be broken by treatment such as ball milling a powder or shearing a suspension.

n: A group of two or more individual particles held together by strong forces. Aggregates are stable to normal stirring, shaking or handling as powder or a suspension. They may be broken by drastic treatment such as ball milling a powder or by shearing a sus

an essentially inert mixture of particles of a particular size range.

n: see tail gate.

n: organisation that sets guidelines for the testing and use of equipment and materials. Its publications are ASTM Standardisation News, Book of Standards, Cement and Concrete Aggregates Journal, Composites Technology & Research, Geo technical Testing Journal, Journal of Forensic Science, and Journal of Testing and Evaluation. Address: 100 Barr Harbor;West Conshohocken, PA 19428;(610) 832-9500.

When a form of energy is propagated through a medium, its amplitude (energy level) is decreased. This decrease is termed attenuation.

n: any shipboard tank or tanker compartment normally used for carrying saltwater ballast. When these compartments or tanks are not connected with the cargo system, they are called segregated ballast tanks or systems.

an elongated lens of sand formed during distribution of sediment in a delta.