- contact mercury barometer
- 电接点水银气压表
English-Chinese electricity dictionary (电气专业词典). 2013.
English-Chinese electricity dictionary (电气专业词典). 2013.
Barometer — Schematic drawing of a simple mercury barometer with vertical mercury column and reservoir at base … Wikipedia
Surface tension — For the work of fiction, see Surface Tension (short story). Surface tension is a property of the surface of a liquid that causes it to behave as an elastic sheet. It allows insects, such as the water strider (pond skater, UK), to walk on water.… … Wikipedia
Earth Sciences — ▪ 2009 Introduction Geology and Geochemistry The theme of the 33rd International Geological Congress, which was held in Norway in August 2008, was “Earth System Science: Foundation for Sustainable Development.” It was attended by nearly… … Universalium
Atmospheric pressure — Air pressure redirects here. For the pressure of air in other systems, see pressure. Atmospheric pressure is the force per unit area exerted against a surface by the weight of air above that surface in the Earth s atmosphere. In most… … Wikipedia
glass — n 1. crystal, (in prescriptions) vitrium; silica, quartz, agate, granite, obsidian. 2. window, pane, glazing; mirror, looking glass, speculum. 3. tumbler, beaker, connikin, goblet, chalice, wine glass; glassware, crystal, vitrics. 4. lens,… … A Note on the Style of the synonym finder
Siphon — Not to be confused with Psiphon. This article is about the domestic device. For the animal organ, see siphon (disambiguation). Siphon principle … Wikipedia
fluid mechanics — an applied science dealing with the basic principles of gaseous and liquid matter. Cf. fluid dynamics. [1940 45] * * * Study of the effects of forces and energy on liquids and gases. One branch of the field, hydrostatics, deals with fluids at… … Universalium
Thermodynamic instruments — A thermodynamic instrument is any device which facilitates the quantitative measurement of thermodynamic systems. In order for a thermodynamic parameter to be truly defined, a technique for its measurement must be specified. For example, the… … Wikipedia
Measuring instrument — Captain Nemo and Professor Aronnax contemplating measuring instruments in Twenty Thousand Leagues Under the Sea … Wikipedia
Glass-to-metal seal — Glass to metal seals are a very important element of the construction of vacuum tubes, electric discharge tubes, incandescent light bulbs, glass encapsulated semiconductor diodes, reed switches, pressure tight glass windows in metal cases, and… … Wikipedia
Alchemy in history — Alchemy encompasses several philosophical traditions spanning some four millennia and three continents. These traditions general penchant for cryptic and symbolic language makes it hard to trace their mutual influences and genetic… … Wikipedia