called piezoelectric crystals. when an electric current is applied to these crystals, they change shape rapidly. the rapid shape changes, or vibrations, of the crystals produce sound waves that travel outward. conversely, when sound or pressure waves hit the crystals, they emit electrical currents....
called piezoelectric crystals. when an electric current is applied to these crystals, they change shape rapidly. the rapid shape changes, or vibrations, of the crystals produce sound waves that travel outward. conversely, when sound or pressure waves hit the crystals, they emit electrical currents....
called piezoelectric crystals. when an electric current is applied to these crystals, they change shape rapidly. the rapid shape changes, or vibrations, of the crystals produce sound waves that travel outward. conversely, when sound or pressure waves hit the crystals, they emit electrical currents....
technologies, new processes and new equipment. its rare earth metal purification and application is also the country's special cow ears. nonferrous metal research institute had contacted us who asked us to provide high purity ammonium chloride for use in the study of rare earth metal high purity crystals...
inorganic salts suppliers trading circle | chemnet | login | contact us | help home product gold suppliers selling board company board cas home > products > inorganic chemicals > inorganic salts featured china inorganic salts products zinc sulphate - - zinc sulphate appears as colorless or white rhombic crystals...
: - - ec no : - - mf : na s mw : specification : main purity≥ %, fe≤ , packing : kg per plastic bag or as your requirments product description : mf: na s name: sulfide sodium molecular weight: product quality: meet the gb - physical and chemical properties: pure sulfide anhydrous is white cubic crystals...
no : - - ec no : - - mf : na s mw : specification : main purity≥ %, fe≤ packing : kg per plastic bag or as your requirments product description : mf: na s name: sulfide sodium molecular weight: product quality: meet the gb - physical and chemical properties: pure sulfide anhydrous is white cubic crystals...
chemicals cas no : - - ec no : - - mf : na s mw : specification : purity≥ %,fe≤ packing : kg/plastic bag or as requirments product description : mf: na s name: sulfide sodium molecular weight: product quality: meet the gb - physical and chemical properties: pure sulfide anhydrous is white cubic crystals...