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  ______     ___      _  _      ___      _____   
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 `____ `   / //\ \\  |  ' ||  / //\ \\ | // __   
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 `__ `    |_||  |_|| |_|\_|| |_||  |_|| \____//  
 /_//     `-`   `-`  `-` -`  `-`   `-`   `---`   
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Text this: Effect of PZT particle size on the electromechanical coupling coefficient of 0-3 PZT-cement composites