英文字典中文字典Word104.com



中文字典辭典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z   


安裝中文字典英文字典辭典工具!

安裝中文字典英文字典辭典工具!








  • Gallium - Wikipedia
    Gallium is a chemical element; it has symbol Ga and atomic number 31 Discovered by the French chemist Paul-Émile Lecoq de Boisbaudran in 1875, [13] elemental gallium is a soft, silvery metal at standard temperature and pressure In its liquid state, it becomes silvery white If enough force is applied, solid gallium may fracture conchoidally
  • Gallium | Uses, Properties, Facts | Britannica
    Gallium, chemical element of Group 13 (the boron group) of the periodic table It liquefies just above room temperature Gallium compounds, some of which form the basis for light-emitting diodes (LEDs), have valuable semiconductor and optoelectronic properties
  • Amazon. com: Gallium
    Gallium Liquid Metal 100 Grams, 99 99% Pure Melting Gallium - Two 50g Vials (100g), Two Syringes, Three Silicone Mold Cubes, and Complete DIY Science Experiment Guide
  • Gallium - Element information, properties and uses | Periodic Table
    Gallium arsenide has a similar structure to silicon and is a useful silicon substitute for the electronics industry It is an important component of many semiconductors It is also used in red LEDs (light emitting diodes) because of its ability to convert electricity to light Solar panels on the Mars Exploration Rover contained gallium arsenide
  • Facts About Gallium - Live Science
    Gallium is a soft, silvery metal used primarily in electronic circuits, semiconductors and light-emitting diodes (LEDs) It is also useful in high-temperature thermometers, barometers,
  • Gallium Facts, Symbol, Discovery, Properties, Uses, Images
    Gallium (pronunciation GAL-ee-em [2]), represented by the chemical symbol (molecular formula) Ga [1], is a soft element belonging to the family of post transition metals [5, 27] Naturally occurring Ga has two stable isotopes with mass numbers 69 and 71 [2]
  • Gallium | History, Uses, Facts, Physical Chemical Characteristics
    Gallium is bluish silver metal It is soft at STP (standard temperature and pressure), while at low temperature, it acquires a brittle solid state Gallium also exists in liquid form at temperature more than 29 76 °C When gallium is held in the hand, it melts and is re-solidified when placed back from hand
  • Gallium Element Facts - Science Notes and Projects
    Liquid gallium forms an exceptional mirror because the element wets many surfaces Gallium wets glass, porcelein, and even human skin The “gallium beating heart” is a safe substitute for the “mercury beating heart” chemistry demonstration Over 95% of gallium is used in the semiconductor industry Pure gallium resists attack by mineral


















中文字典-英文字典  2005-2009

|中文姓名英譯,姓名翻譯 |简体中文英文字典