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gddqq

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[求助] plasma是什么?

简单点介绍下~
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shijichao001

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huangjr(金币+1): 感谢回帖交流~ 2012-01-13 11:40:12
n. [物]等离子体;[医]血浆;[矿]深绿玉髓
2楼2012-01-11 19:29:56
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cluster8676

至尊木虫 (著名写手)

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huangjr(金币+1): 感谢应助~ 2012-01-13 11:40:01
In physics and chemistry, plasma is a state of matter similar to gas in which a certain portion of the particles are ionized. Heating a gas may ionize its molecules or atoms (reduce or increase the number of electrons in them), thus turning it into a plasma, which contains charged particles: positive ions and negative electrons or ions.[1] Ionization can be induced by other means, such as strong electromagnetic field applied with a laser or microwave generator, and is accompanied by the dissociation of molecular bonds, if present.
The presence of a non-negligible number of charge carriers makes the plasma electrically conductive so that it responds strongly to electromagnetic fields. Plasma, therefore, has properties quite unlike those of solids, liquids, or gases and is considered a distinct state of matter. Like gas, plasma does not have a definite shape or a definite volume unless enclosed in a container; unlike gas, under the influence of a magnetic field, it may form structures such as filaments, beams and double layer. Some common plasmas are stars and neon signs. In the universe, plasma is the most common state of matter for ordinary matter, most of which is in the rarefied intergalactic plasma (particularly intracluster medium) and in stars.

详情参照 http://en.wikipedia.org/wiki/Plasma_(physics)
学无止境
3楼2012-01-11 22:30:27
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chavid

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huangjr(金币+1): 感谢回帖交流~ 2012-01-13 11:39:20
在物理上,就是等离子体了,在生物中就指的是血浆
药物化学导向的化学生物学
4楼2012-01-12 16:49:45
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haodong1121

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huangjr(金币+1): 感谢交流~ 2012-01-13 11:39:09
要做材料的话,一般就是等离子体了。
梦想当学霸+大牛……
5楼2012-01-13 11:26:55
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因果成眠

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等离子体,介于液体和气体之间的第四种物质形态,一般存在于贵金属纳米粒子之间
成功在于抓住机遇,在于路上偶尔四处看看,但是大多数的时间还是要专心走路
6楼2012-03-08 14:46:05
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guozhenxi

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等离子清洗,去碳氧化层的
精通的目的全在于应用!
7楼2012-03-23 17:35:54
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