yoyocrusher169的部落格 :: 痞客邦
歡迎光臨yoyocrusher169在痞客邦的小天地 Rubidium and cesium are dispersed dilute alkali metal, mainly used in electronic devices ( photoelectric photomultiplier tube ), spectrophotometer, automatic control, spectroscopy, color film and television, radar Graphite Powder Making Machine, laser, ion rockets, thermionic energy converter, glass, ceramics, electronic clock, atomic clocks ...