Pure alcohol (ethanol). 纯酒精(乙醇)。...[继续阅读]

    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...[继续阅读]

    The zero value of thermodynamic temperature;0 kelvin or-273.15℃. 热力学温度的零度;0°K或者-273.15℃。...[继续阅读]

    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...[继续阅读]

    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...[继续阅读]

    See spectrum. 参阅spectrum。...[继续阅读]

    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...[继续阅读]

    A catalyst added to increasethe rate of cross-linking reactions in polymers.一种催化剂,加入后能加快聚合物交联反应的速率。...[继续阅读]

    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.在配位键中接受一对电子的原子或基团。π接受体是π、p或d轨道接受电子的基团或化合物。...[继续阅读]

    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...[继续阅读]