Pure alcohol (ethanol). 純酒精(乙醇)。...[繼續(xù)閱讀]

    Symbol:T A tem-perature defined by the relationship: T=θ+273.15 where θ is the Celsius tempera-ture.The absolute scale of temperature wasa fundamental scale based on Charles’lawapplied to an ideal gas: V=V0 (1+αθ)where V is the volume at temperature θ,V0t...[繼續(xù)閱讀]

    The zero value of thermodynamic temperature;0 kelvin or-273.15℃. 熱力學溫度的零度;0°K或者-273.15℃。...[繼續(xù)閱讀]

    A process in which a gas is taken up by a liquid or solid,or in which aliquid is taken up by a solid. In absorption,the substance absorbed goes into the bulkof the material. Solids that absorb gases orliquids often have a porous structure. Theabsorption o...[繼續(xù)閱讀]

    An indicator used for titrations that in-volve a precipitation reaction. The methoddepends upon the fact that at the equiva-lence point there is a change in the natureof the ions absorbed by the precipitate par-ticles. Fluoresein—a fluorescent com-pound-i...[繼續(xù)閱讀]

    See spectrum. 參閱spectrum。...[繼續(xù)閱讀]

    1. The relative amount of agiven element among others; for example,the abundance of oxygen in the Earth’scrust is approximately 50% by mass. 2.The amount of a nuclide (stable or radioactive)relative to other nuclides of the sameelement in a given sample,T...[繼續(xù)閱讀]

    A catalyst added to increasethe rate of cross-linking reactions in polymers.一種催化劑,加入后能加快聚合物交聯(lián)反應的速率。...[繼續(xù)閱讀]

    The atom or group to which apair of electrons is donated in a coordinate bond. Piacceptors are compounds orgroups that accept electrons into pi,p or dorbitals.在配位鍵中接受一對電子的原子或基團。π接受體是π、p或d軌道接受電子的基團或化合物。...[繼續(xù)閱讀]

    An electric cell or battery that can becharged by passing an electric currentthrough it. The chemical reaction in the cellis reversible. When the cell begins to rundown,current in the opposite direction willconvert the reaction products back intotheir ori...[繼續(xù)閱讀]