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In view of separation, the separation of porphyrin complexes with different central metal ions is more difficult.

从分离的角度看，不同金属离子与同一个卟啉配体所形成的配合物之间的分离相对要难一些。

Look at your first post-college posit ions as temporary stops on your career path instead of permanent ones.

把你刚毕业后的工作看成职业生涯中的临时站点而不是永久站点。

The peak intensities of molecular ions in positive ion mode are stronger than those in negative mode.

在正离子和负离子模式下都有两种裂解机理。

Meanwhile, ions and nitrogen accumulation in shoot had significantly positive correlations with those root morphologic characteristics.

高盐胁迫下增加氮营养，显著增加了地上部Na+、NO3-、有机氮的含量和硝酸还原酶的活性；降低了Cl-和K+的含量。

Potassium chloride and potassium bromide crystals were effectively colored with 36 keV xenon ions.

用36keV氙离子注入，有效地使氯化钾和溴化钾晶体着色。

The TOF MS studies of the transition metal / nonmetal cluster ions and Potassium Cyanide clus...

通过对不同条件下形成的团簇离子组成的分析，提出团簇离子形成的可能机理。

The mathematical models of the dynamics of the mass transfer based on the Nernst-Planck equation were established from which it is found that the different characteristics of the water decomposition between the cation and the anion exchange membranes or resins, is owing to the different potential gradient on the two kind of ion-exchange interfaces, which is further because of the difference between the structure and performance of the different membranes or resins, and is also because of the difference between transfer numbers of cation and anion ions.

根据所建立的传质数学模型方程获知在阴阳膜／树脂表面与水接触的界面层中发生的水解离的差异性，是在于离子交换界面电势梯度的差异，而这种差异又与膜与树脂的结构、性能以及阴阳离子在水溶液中的迁移数的差异有关。

With this technique, both ions can be detected down to a concentration of 0.1 ppm.

通过此项技术，此两种离子都可以进行检测，且检测的浓度可以低至0.1ppm。

The results show that the isotherms of the interaction between praseodymium and yttrium ions and the sediments are the stepped.

结果表明，黄河水中Pr3+和Y3+与沉积物相互作用的吸附等温线具有一个"拐点"两个"平台"，是一种台阶型的二级交换等温线。

In this paper, we reported the spectroscopic properties of praseodymium ions Pr(superscript 3+ doped transparent oxyfluoride glass ceramic excited with different laser lines, such as 532, 514.5 and 476.5um.

用不同的激发波长532，514.5，476.5nm，研究稀土Pr(上标 3+)掺杂的透明氟氧化物玻璃陶瓷中Pr(上标 3+)在LaF3微晶环境和玻璃环境中的不同的荧光行为。

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。