plasma 音标拼音: [pl'æzmə]
n . 血浆;乳浆;原形质;深绿玉髓
血浆;乳浆;原形质;深绿玉髓
plasma 等离子体
plasma 电浆
plasma n 1 :
the colorless watery fluid of the blood and lymph that contains no cells ,
but in which the blood cells (
erythrocytes ,
leukocytes ,
and thrombocytes )
are suspended [
synonym : {
plasma }, {
plasm }, {
blood plasma }]
2 :
a green slightly translucent variety of chalcedony used as a gemstone 3 : (
physical chemistry )
a fourth state of matter distinct from solid or liquid or gas and present in stars and fusion reactors ;
a gas becomes a plasma when it is heated until the atoms lose all their electrons ,
leaving a highly electrified collection of nuclei and free electrons ; "
particles in space exist in the form of a plasma "
Plasma \
Plas "
ma \,
n . [
See {
Plasm }.]
1 . (
Min .)
A variety of quartz ,
of a color between grass green and leek green ,
which is found associated with common chalcedony .
It was much esteemed by the ancients for making engraved ornaments .
[
1913 Webster ]
2 . (
Biol .)
The viscous material of an animal or vegetable cell ,
out of which the various tissues are formed by a process of differentiation ;
protoplasm .
[
1913 Webster ]
3 .
Unorganized material ;
elementary matter .
[
1913 Webster ]
4 . (
Med .)
A mixture of starch and glycerin ,
used as a substitute for ointments . --
U .
S .
Disp .
[
1913 Webster ]
5 .
same as {
blood plasma }.
[
PJC ]
6 . (
physics )
a state of matter in which charged particles such as electrons and atomi nuclei have sufficiently high energy to move freely ,
rather than be bound in atoms as in ordinary matter ;
it has some of the properties of a gas ,
but is a conductor of electricity .
Note :
In a typical plasma ,
the number of positive and negative particles are approximately equal .
Plasmas are found naturally in the atmosphere of stars ,
and can be created in special laboratory apparatus .
[
PJC ]
{
Blood plasma } (
Physiol .),
the colorless fluid of the blood ,
in which the red and white blood corpuscles are suspended .
It may be obtained by centrifuation of blood to remove the blood cells .
It is distinguished from {
serum }
in that plasma still has the fibrin of blood ,
and may be clotted ,
while in serum the fibrin has been removed .
{
Muscle plasma } (
Physiol .),
the fundamental part of muscle fibers ,
a thick ,
viscid ,
albuminous fluid contained within the sarcolemma ,
which on the death of the muscle coagulates to a semisolid mass .
[
1913 Webster PJC ]
Plasmatic 52 Moby Thesaurus words for "
plasma ":
Rh factor ,
Rh -
negative ,
Rh -
positive ,
Rh -
type ,
Rhesus factor ,
antibody ,
antigen ,
arterial blood ,
blood ,
blood bank ,
blood cell ,
blood count ,
blood donor ,
blood donor center ,
blood group ,
blood grouping ,
blood picture ,
blood platelet ,
blood pressure ,
blood serum ,
blood substitute ,
bloodmobile ,
bloodstream ,
circulation ,
clinical dextran ,
dextran ,
erythrocyte ,
globulin ,
gore ,
grume ,
hematics ,
hematologist ,
hematology ,
hematoscope ,
hematoscopy ,
hemocyte ,
hemoglobin ,
hemometer ,
humor ,
ichor ,
isoantibody ,
leukocyte ,
lifeblood ,
neutrophil ,
opsonin ,
phagocyte ,
plasma substitute ,
red corpuscle ,
serum ,
type O ,
venous blood ,
white corpuscle
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Plasma (physics) - Wikipedia Stars are almost pure balls of plasma, and plasma dominates the rarefied intracluster medium and intergalactic medium [2][3] Plasma can be artificially generated, for example, by heating a neutral gas or subjecting it to a strong electromagnetic field
等离子体(物理学术语)_百度百科 等离子体(Plasma),被称为“物质的第四态”,是指由电子、离子、原子和中性粒子组成的电离气体。 其主要特点是高度的导电性和响应电磁场的能力。 等离子体由美国科学家欧文·朗缪尔(Irving Langmuir)于1928年首次提出。
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plasma(英语单词)_百度百科 plasma是英语多学科术语,源自希腊语"plasma"(被塑造之物),1712年首次作为古典形式出现,1845年新增"血液液态成分"释义,1928年物理学领域定义为"高温电离气体态"。 包含血浆、等离子体、原浆及等离子显示屏等多重含义。
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What Is Plasma? - MIT Plasma Science and Fusion Center Plasma is superheated matter – so hot that the electrons are ripped away from the atoms forming an ionized gas It comprises over 99% of the visible universe In the night sky, plasma glows in the form of stars, nebulas, and even the auroras that sometimes ripple above the north and south poles
Plasma表面清洁原理及示意图 - 知乎 等离子体 (plasma)又叫做电浆,是由原子或原子团因失去电子而被电离后产生的正负离子组成的离子化气体状物质,被视为固、液、气外,物质存在的第四态,常被称为等离子态,或者“超气态”,如图1 1。
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plasma表面处理工艺原理及其示意图-plasma plasma材料表面处理是个复杂的过程,受到等离子体放电频率、功率、电压、处理时间、气体类型等因素的影响。 用于材料表面处理的plasma处理设备可以在多种气体氛围下放电形成等离子体,包括空气、氩气、氧气、氦气、氮气、甲烷、氨气等。