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發表於:2017-01-09
Thesituationinbasemetalsissimilar.mouth-operatedblowpipeofbasemetalsThecurrentrecord-breakingrunforsomespecialitymetalsmirroredpricemovementsinbasemetals.cupel:Toassayors...
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發表於:2024-01-13
1、Thecatalystscandivideintotwokinds:thetransitionmetalbifunctionalcatalystsandoxycarbidecatalystsoftransitionmetals.2、Influencingfactorsofgenerationefficiencyofvolatile...
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發表於:2018-05-24
strongacidsattackmetals.cementedcarbides,hardmetalsAcidseatintometals.recoveryofnonferrousmetalsOverheatedmetalsmaycastbadly.strongacidsbiteinmetals.Tungstenisclassifieda...
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發表於:2017-10-13
Youcanorderasmallcrossmadeofbrassorfrompreciousmetalswithpreciousstones.Transactionrecord.Silverpreciousmaterial,highartisticvalue,castbythepreciousmetalsorsilveralloypro...
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發表於:2017-09-10
anoblegassuchasheliumorneon;noblemetalsincludegoldandsilverandplatinum.Thisreviewsummariestheapplicationofionexchangersintheseparationanddeterminationofalkalimetals,alkal...