- trace gas
- 微量气体
Atmospheric Sciences (English-Chinese) dictionary. 2014.
trace gas
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Trace gas — The term Trace gas refers to a gas or gases which make up less than 1% by volume of the earth s atmosphere, and therefore includes all gases except nitrogen (78.1%) and oxygen (20.9%). The most abundant trace gas at 0.934% is argon, which is… … Wikipedia
trace gas — /ˈtreɪs gæs/ (say trays gas) noun a gas occurring naturally in very small quantities; altogether usually less than 1 per cent of the volume of the earth s atmosphere …
ExoMars Trace Gas Orbiter — with Europe’s entry, descent and landing demonstration vehicle Operator ESA and NASA Mission type Orbiter/carrier Satellite of … Wikipedia
ExoMars Trace Gas Orbiter — Vue d artiste de Mars Trace Gas Mission Caractéristiques Organisation … Wikipédia en Français
Gas chromatography — A gas chromatograph with a headspace sampler Acronym GLC, GC Classification chromatography Analytes organic inorganic … Wikipedia
Gas chromatography-mass spectrometry — (GC MS) is a method that combines the features of gas liquid chromatography and mass spectrometry to identify different substances within a test sample. Applications of GC MS include drug detection, fire investigation, environmental analysis,… … Wikipedia
Trace evidence — contends that every contact, no matter how slight, will leave a trace. The trace is normally caused by objects or substances contacting one another, and leaving a minute sample on the contact surfaces. Material is often transferred by heat… … Wikipedia
Gas exchange — or respiration takes place at a respiratory surface a boundary between the external environment and the interior of the body. For unicellular organisms the respiratory surface is Fick s law we can predict that respiratory surfaces must have: *a… … Wikipedia
gas — gasless, adj. /gas/, n., pl. gases, v., gassed, gassing. n. 1. Physics. a substance possessing perfect molecular mobility and the property of indefinite expansion, as opposed to a solid or liquid. 2. any such fluid or mixture of fluids. 3. any… … Universalium
trace — {{Roman}}I.{{/Roman}} noun 1 mark/sign that shows sb/sth happened/existed ADJECTIVE ▪ archaeological, historical ▪ indelible, permanent ▪ memory (technical) VERB + TRACE … Collocations dictionary
Gas-liquid chromatography — Infobox chemical analysis name = Gas liquid chromatography caption =A gas chromatograph with a headspace sampler acronym = GLC, GC classification =chromatography analytes = organic inorganic must be volatile manufacturers = Agilent (a spin off of … Wikipedia
