バセロン コンスタンチン K18YG 金無垢 手巻き・HA-1645:
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Wednesday, June 17, 2015
Sunday, June 14, 2015
Saturday, June 13, 2015
Monday, June 08, 2015
Patent US7620188 - Cylinder responsive vibratory noise control apparatus - Google Patents
Patent US7620188 - Cylinder responsive vibratory noise control apparatus - Google Patents: " The 4-cycle 6-cylinder internal combustion engine therefore produces a lot of vibratory noise that is referred to as a rotational 1.5th-order component."
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Sunday, June 07, 2015
Friday, June 05, 2015
Saturday, May 30, 2015
Acoustic and vibrations
Acoustic and vibrations: "The far field is divided into the free field and the reverberant field.
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