I?eduro: ?t??l?? Raymond s¨¢b¨¤ m¨¢a ¨½ l¨° n¨ª ??p??l?p?? ¨¤w?n i??? ??n¨¤, ¨¤ti p¨¦ ¨® gbaj¨²m?? gan-an. B¨ª o b¨¢ f¨¦? k¨ª ¨¤t??l?? Raymond ?i??? f¨²n ??p??l?p?? ?j??, o gb?d?? boj¨²t¨® ??r? n¨¢¨¤

??k?? Raymond¨® s¨¢b¨¤ m¨¢a ¨½ l¨° n¨ª ??p??l?p?? ¨¤w?n i??? ??n¨¤, ¨¤ti p¨¦ ¨® gbaj¨²m?? gan-an. B¨ª o b¨¢ f¨¦? k¨ª ¨¤t??l?? Raymond ?i??? f¨²n ??p??l?p?? ?j??, o gb?d?? boj¨²t¨® ??r? n¨¢¨¤, ¨¤ti p¨¦ ¨¬t??j¨² ¨¤???d¨¢¨¤n¨ª ?¨ª?e ¨¤?e-¨¬??? n¨¢¨¤ ?e p¨¤t¨¤k¨¬ gan-an.
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?t??l?? Raymond n¨ª ??p??l?p?? ¨¤w?n ¨¤???d¨¢¨¤n¨ª ?¨ª?e ¨¤?e-¨¬??? t¨ª ¨® y¨¤t?? s¨ªra ¨¤ti ¨¤w?n ap?r? t¨ª ¨® y¨¤t?? s¨ªra, ¨¤ti p¨¦ ipa i??? w?n y¨¤t?? s¨ªra.
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Aw?n o¨°g¨´n ¨¤¨¬s?d¨¢, g??g?? b¨ªi graphite, platinum disulfide, nylon, ati b?b? l?.
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2. ?w?n ohun ¨¬t??j¨² t¨® j?? omi: ¨® n¨ª ¨¤w?n l¨ªlo p¨²p??, t¨ªt¨ª kan ¨¤w?n ohun ¨¬t??j¨² t¨® j?? ¨¨r¨°j¨¤, ¨¤w?n ohun ¨¬t??j¨² t¨® j?? ?ranko ¨¤ti ew¨¦ko, ¨¤ti ¨¤w?n ohun ¨¬t??j¨² t¨® j?? a?e.
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3. Ol¨®r¨® g¨ª¨¢s¨¬: Eyikey¨¬¨ª g¨ª¨¢s¨¬ l¨¨ ?e ol¨®r¨® g¨ª¨¢s¨¬, gbogbo ¨¤w?n t¨ª a m¨¢a n l¨° p¨²p¨° ni af??f??, l??y¨¬n n¨¢¨¤ ni ??f¨²uf¨², k¨¤¨¤¨¢r¨°, ¨¤ti b?? b?? l?; a m¨¢a n l¨° ¨® l¨¢ti fi ?e ol¨®r¨® ¨¤w?n g¨ª¨¢s¨¬ b¨¦¨¢r¨ªng¨¬.
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4. ?w?n o¨°g¨´n t¨ªt??-s¨ª-s¨ª: l¨ªlo w?n p?? gan-an, p??l¨² ¨¤w?n o¨°g¨´n t¨ª a ?e p??l¨² ????, ¨¤w?n o¨°g¨´n hydroxy, ¨¤w?n o¨°g¨´n inorganic ¨¤ti ¨¤w?n o¨°g¨´n organic ¨¤ti ¨¤w?n o¨°g¨´n m¨¬¨ªr¨¤n.
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? y? k¨ª a ?e ¨¬d¨¢nil¨®j¨² ¨¤ti ¨¤l¨¤y¨¦ l¨®r¨ª ir¨² o¨°g¨´n t¨ª a l¨° n¨ªl¨´ Raymond, ¨¤ti k¨ª a m¨¢a r??p?? w?n n¨ªgb¨¤ gbogbo. K¨° gb?d?? j?? p¨¦ ¨® p?? j¨´, k¨ª a s¨¬ gb¨¤gb¨¦ l¨¢ti fi k¨²n un, b¨ª k¨° b¨¢ r¨ª b¨¦?¨¨?, y¨®¨° m¨² k¨ª ¨¤w?n ??ka Raymond m¨¢a b¨¤ j??.