| manganese |
a hard brittle grey polyvalent metallic element that resembles iron but is not magnetic; used in making steel; occurs in many minerals
출처: wordnet.princeton.edu/perl/webwn
|
|---|---|
| manganese |
Manganese(IV) oxide (MnO2) is a chemical compound also known as manganese dioxide or manganese oxide. It has a blackish or brown color. It occurs naturally as the mineral pyrolusite which is the main source for extracting the metal manganese. It is also present in manganese nodules. The principal use for MnO2 is for dry-cell batteries, such as the alkaline_battery and the zinc-carbon_battery; in 1976 this accounted for half a million tonnes per year of pyrolusite. ...
출처: en.wikipedia.org/wiki/Manganese(IV)_oxide
|
| manganese |
CAS Number: 7439-96-5. A gray-white metal, resembling iron, but is harder and very brittle. It is reactive chemically, and decomposes in cold water slowly. Manganese is used to form many important alloys. In steel, manganese improves rolling and forging qualities, strength, toughness, stiffness, wear resistance, and hardness. Manganese colors glass an amethyst color, and is responsible for the color of true amethyst. Chemical formula = Mn. Molecular weight = 54.938 g/mol. ...
출처: www.pca.state.mn.us/gloss/glossary.cfm
|
| manganese |
A mineral occurring abundantly in mineral mud, sea salts and specific sea plants.
출처: www.melangecosmetics.com/ingredients.htm
|
| manganese |
A gray-white or silvery brittle, metallic, element which resembles iron but is not magnetic. It is found abundantly in the ores pyrolusite, manganite, and rhodochrosite and in nodules on the ocean floor. Manganese is alloyed with iron to form ferromanganese, which is used to increase strength, hardness, and wear resistance of steel.
출처: www.jewelrysupplier.com/glossary/M-glossary.htm
|