原子序数

A short - lived , radioactive synthetic transuranic element produced from californium and having

铹一种寿命期短的、人工合成的放射性超铀元素，从锎中生成，有质量从255到260的同位素，半衰期从几秒钟到三分钟；原子序数

The atomic number represents the number of nuclear protons or, in the undisturbed state, the number of extranuclear electrons

原子序数表示原子核内质子的数目，也是在未被干扰的状态下核外的电子数。

The atomic number represents the number of nuclear protons or, in the undisturbed state, the number of extranuclear electrons

原子序数表示原子核内质子的数目，也是在未被干扰的状态下核外的电子数。收藏反馈

Last, the Eigenenergies of isoelectronic series change against screening parameterλhas been discussed, it's shown that the plasma screening effects are decreasing as nuclear charge increasing.

最后，我们分析了等离子体环境中类氢等电子序列离子的能级和波函数随屏蔽参数λ的变化规律，发现随着原子序数增大，等离子体屏蔽效应的影响逐渐变小。

Bismuth oxyhalide compounds show better photocatalytic activities than TiO2 (P25). With the increasing of X atomic numbers, photocatalytic activities of BiOX are enhanced in sequence.

卤氧化铋的光催化活性普遍优于商品TiO2 (P25)的光催化活性，并且随着卤素原子序数的增加光催化活性逐渐增强。

Transuranium elements with atomic numbers through 112, along with 114 and 116, have been produced in laboratories.

原子序数一直到112的元素，加上114、116和118元素都已经在实验室里产生出来。

Based on the experimental data of low (less than 13) ionization energy of lighter elements, the function of shielding coefficient, electronic states and atomic number is summarized when the atom ionizes electron in different electronic state of the second and first shell.

依据较轻元素原子低次（小于13）电离能实验数据，总结出原子电离第2、1壳层不同电子态电子时，相应的屏蔽系数与电子态及原子序数的函数关系，根据该函数关系，可求出相应原子的高次电离电子的屏蔽系数。

Periodic Table Ⅶ B family silver or gray-black powder bulk solid metal transition element, atomic number Z = 35, the original of the amount of 186,207, the chemical symbol FRe, there are two natural isotopes, stable 18575Re and radioactive 18775Re.

元素周期表中ⅦB族银白色的块状或灰黑色粉末状固体金属过渡元素，原子序数Z＝35，原了量186207，化学符号FRe，天然同位素有两种，稳定的18575Re和放射性的18775Re。

The data of selected structure parameters of (C_5H_5)_3Ln· THF, such as the average distance between the penta carbon ring and the central metal, the distance between the penta carbon center or the coordinated THF and the central metal, showed that their values decreased with the increase of atomic number.

产物(C_5H_5)_3Ln·THF的特征结构参数，如五元碳环的碳原子与中心金属的平均距离，五元碳环质心与中心金属距离，配位的四氢呋喃氧原子与中心金属距离，由于&镧系收缩现象&，随着中心原子序数的增加而减小。

Periodic Table Ⅵ B family silver-white metallic luster of the solid metal transition element, atomic number Z = 74, atomic weight of 18385, chemical symbol W, there are five kinds of natural F stable isotopes, 18174W, 18274W, 18374W, 18474W, 18574W and eight kinds of radioisotopes .

周期表中ⅥB族银白色金属光泽的固体金属过渡元素，原子序数Z＝74，原子量18385，化学符号W，有五种自然F 稳定同位素，18174W、18274W、18374W、18474W、18574W和八种放射性同位素。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。