偶极子云的问题是在通过单基地雷达观测时有效散射截面。

The problem of the dipole cloud is an effective scattering cross-section while observed by a monostatic radar was studied.

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碘乙酸的极谱行为已通过单扫描极谱法，直流极谱法和循环伏安法进行了研究。

The polarographic behavior of iodoacetic acid has been studied by using single sweep polarography, direct current polarography and cyclic voltammetry.

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通过单因素隶属老化度的计算，对堤防工程老化进行了综合评价。

Through the calculation of subordinate ageing degree of single factor, the ageing of engineering works is evaluated comprehensively.

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This one is calculable by the Bohr model because lithium 2plus is a one electron system.

这个可以通过波尔模型计算而得到,因为锂2+是单电子系统。

麻省理工公开课 - 固态化学导论课程节选

Now, the polio vaccine that Salk produced was very effective, but it required a fairly large dose of the vaccine and it had to be injected into the arms of children.

索尔克生产的小儿麻痹症疫苗效果显著,但是,该疫苗的单支注射剂量非常大,而且必须通过小孩的手臂进行注射

耶鲁公开课 - 生物医学工程探索课程节选