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Gream, scroan
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Grease, английский
- A lubricant composed of an oil or oils thickened with a soap, soaps or other thickener to a semisolid or solid consistency.
- (консистентная) смазка
- A type of lubricant composed of a fluid (typically lubricant oils) thickened with a material that contributes a degree of plasticity (typically soaps). just as viscosity is the basic property of lubricating oil, consistency is the basic property of grease. consistency is measured in terms of penetration, tested in terms of tenths of a millimeter that a standard cone acting under the influence of gravity penetrates the sample under controlled test conditions. the greater penetration, the softer the grease.
- Lubricant composed of an oil or oils thickened with a soap, soaps or other thickener to a semifluid to solid consistency. may also contain other additives.
Grazer, английский
- A consumer which attacks large numbers of large prey during its lifetime, but removes only a part of each prey individual, so that the effect although often harmful, is rarely lethal in the short term, and never predictably lethal; e.g. cow, mosquito, etc. keystone p.: is the wedge-shaped block at the highest point of an arch. its early use in food-web architecture referred to a top predator that has an indirect beneficial effect on a suite of inferior competitors by depressing the abundance of a superior competitor. removal of the keystone predator, just like removal of the keystone in an arch, leads to collapse of the structure (= true predator). true p.: utilizes a prey organism by killing some to many of them: • parasites: an organism that obtains its nutrients from one or very few host individuals, causing harm but not death immediately (obligate, facultative parasitism). • parasitoids.: insects (mostly wasps and flies) in which the adults are free-living, but eggs are laid, on or near an insect host (or rarely, a spider or isopod), after which the parasitoid larva develops in the host (itself usually a pre-adult), initially doing little apparent harm, but eventually consuming and killing the host before or during the pupal stage.
- Пасущееся животное
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