A hard brittle silver-whitetransition metal,the second element of group8 (formerly part of subgroup Ⅷ B) of the pe-riodic table. It occurs naturally with platinumin the natural alloy osmiridium and in somesulfide ores. Its relatively high melting pointand...[繼續(xù)閱讀]

    See defect參閱173頁(yè)defect。...[繼續(xù)閱讀]

    See isomerism參閱313頁(yè)isomerism。...[繼續(xù)閱讀]

    A COL-LIGATIVE PROPERTY of solutions in whichthe freezing point of a given solvent is low-ered by the presence of a solute. The amountof the reduction is proportional to the molalconcentration (m) of the solute. The depres-sion depends only on this concen...[繼續(xù)閱讀]

    The suspension ofa finely-di-vided solid,e. g. a catalyst,in an upward-flowing liquid or gas. This suspension mim-ics many properties of liquids,including al-lowing the solids to float in it and achievea uniform temperature with the fluid medi-um. Fluidiz...[繼續(xù)閱讀]

    See phosphonic acid參閱444頁(yè)phosphonic acid。...[繼續(xù)閱讀]

    See relative molecularmass參閱496頁(yè)rela-tive molecular mass。...[繼續(xù)閱讀]

    See sodium hydrogensul-fate參閱539頁(yè)sodiumhydrogensulfate。...[繼續(xù)閱讀]

    See gas laws參閱249頁(yè)gas laws。...[繼續(xù)閱讀]

    To pour off the clear liquid above asediment or heavier,immiscible liquid傾倒出在沉淀或沉重物、不混溶液體上面的清液。...[繼續(xù)閱讀]