valence 价点价(0)   相似匹配句对      Valence of French verbs      法语动词Valence 短句来源      On the Logic Valence of Verbs      谈动词的逻辑配价 短句来源 查询“(valence”译词为用户自定义的双语例句     我想查看译文中含有：的双语例句 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法，我们为您准备了出自英文原文的大量英语例句，供您参考。   valence Studies on exposure status of inhabitants to water-arsenic valence states in areas with endemic arsenism in the Datong basin in 例句来源       This study aimed to describe the distribution of water-arsenic (As) valence states and its relationship to areas with endemic arsenism in the Datong basin. 例句来源       The most common type of drinking water arsenic valence state was As(III) in the endemic disease-areas. 例句来源       This led us to conclude that the fraction of each water-arsenic valence state should be studied when determining the arsenic content of drinking water. 例句来源       The valence of atoms was determined by X-ray photoelectron spectroscopy. 例句来源       更多                    When ceric iodate is precipitated from acid solution by the addition of asoluble iodate,a gelatinous precipitate is obtained,which is difficult to filterand wash.The precipitate must be redissolved and reprecipitated as oxalatefor final ignition to ceric oxide.A method has been deviced to improve the form of the ceric iodateprecipitate by slow precipitation in homogeneous solution.Advantage is takenof the fact that cerium exists in two distinct valence states,the cerous and theceric.Cerous iodate is s...             1.在均匀溶液中沉淀的碘酸铈,性质紧密,便利于过滤和洗涤。烧灼成为氧化铈后,适合于作为铈的定量分析。2.利用碘酸亚铈能溶解于稀酸溶液而碘酸铈则不溶的区别,先用过氧化氢把全部铈离子还原,再加入碘酸铵,然后进行氧化,使碘酸铈在均匀溶液中沉淀出来。3.本方法适用于含氧化铈2.5—250毫克的样品。4.所得沉淀的分子式经初步测定为 C_(e2)(IO_3)_7(OH)·x H_2O,其中 x 的数值不定,涨落在3与5之间。 文摘来源          Slater and Krutter have attempted to solve the problem of cohesive energy of metals by using the Fermi-Thomas method. They treated the valence electrons and the electrons in the ion core on the same footing. In a way similar to Seitz's cellular method, a sphere with a volume equal to that of a unit cell was drawn and periodic boundary conditions were applied on the surface. Furthermore another boundary condition was imposed in their calculation, namely, on the ground that the sphere as a whole is elec...             本文用Fermi-Thomas方法计算了金属的结合能。得到初步结果:金属的能量舆晶格常数的关系中,有一极小值。此极小值所对应的原子间距对重金属舆实验值相近,而对单价碱金属则理论值太小。所得结合能的数值较实验值大很多。作者认为这是由於F.T.方法应用到原子上所存在的误差所引起的,而不是在金属内应用的误差所引起的。 文摘来源          The nature of the chemical bond in conjugate triatomic molecules such as ClO2, O3, SO2, NO2, CO2, N3-, NO2+, N2O, HgCl2, etc. has been discussed from the point of view of the molecular orbital theory. It has been demonstrated quantum mechanically that the conditions of forming a conjugate π bond are: (1) Each atom of the AB2 molecule has a p orbital of approximately equal energy and parallel to one another; (2) the total number of p electrons must be less than two times the number of p orbitala. Triatomic m...             本文用分子轨道法处理了AB_2型无机共轭分子的结构,讨论了形成大π键的条件,具体分析了具有16至20个价电子的AB_2型分子的结构和性质,提出结构式的两种写法。 文摘来源   << 更多相关文摘         相关查询: valence low valence average valence variable valence chemical valence valence electron valence shell valence orbit valence stability valence bond antibody valence coordination valence  对查询结果不满意

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