“granulation”的概念、定义、翻译、参考文献-科学参考

granulation

Astronomy

A mottling of the Sun’s photosphere consisting of numerous small light areas called granules. Individual granules are as much as 1000 km across and may have polygonal shapes. They are separated from each other by darker intergranular lanes, about 400 K cooler than granules. Granule lifetimes are around 20 min, their birth being from the fragments of previous granules and their demise from fragmentation, fading, or sometimes explosion into small fragments. Granules are elongated near sunspots, and also can occur within sunspot umbrae (umbral dots). Spectroscopic observations reveal that granules are convection cells of rising hot gas, and the intergranular lanes mark regions of descending cooler gas.

Chemical Engineering

A process used in the pharmaceutical industry to prepare powders for the production of tablets. The granulation process involves combining one or more powders to create bonds between the particles of the powder. These are formed by compression or by using a binding agent to produce a tablet with good hardness and a consistent quality. The machines used for granulation are called granulators that apply the necessary shear to combine the powders and the binding solution. The fluid-bed granulator uses air to elevate the powders while the binding solution is sprayed onto the particles.

Geology and Earth Sciences

The comminution, during deformation, of crystals into smaller grains of equal size which are then able to rotate in relation to one another. The process is a common feature of plastic deformation in granitoids.

单词	granulation
释义	granulation Astronomy A mottling of the Sun’s photosphere consisting of numerous small light areas called granules. Individual granules are as much as 1000 km across and may have polygonal shapes. They are separated from each other by darker intergranular lanes, about 400 K cooler than granules. Granule lifetimes are around 20 min, their birth being from the fragments of previous granules and their demise from fragmentation, fading, or sometimes explosion into small fragments. Granules are elongated near sunspots, and also can occur within sunspot umbrae (umbral dots). Spectroscopic observations reveal that granules are convection cells of rising hot gas, and the intergranular lanes mark regions of descending cooler gas. Chemical Engineering A process used in the pharmaceutical industry to prepare powders for the production of tablets. The granulation process involves combining one or more powders to create bonds between the particles of the powder. These are formed by compression or by using a binding agent to produce a tablet with good hardness and a consistent quality. The machines used for granulation are called granulators that apply the necessary shear to combine the powders and the binding solution. The fluid-bed granulator uses air to elevate the powders while the binding solution is sprayed onto the particles. Geology and Earth Sciences The comminution, during deformation, of crystals into smaller grains of equal size which are then able to rotate in relation to one another. The process is a common feature of plastic deformation in granitoids.
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