excursion是什么意思

用法例句

Blake polarity event has not been observed in the east of the Liupan mountains until now.

对黄土高原定边、西峰、渭南三个剖面中古土壤层S1的定向连续古地磁样品作了详细的岩石磁学和古地磁学研究，均未发现Blake极性事件。

Effects of Polarity of Reaction Medium on Electrical Conductivity of Nano-meter Polyaniline;

反应介质的极性对纳米聚苯胺导电性能的影响

Influence of Pulse Polarity on Nano-Machining of Scanning Tunneling Microscope;

STM脉冲电压极性对材料微细加工影响的研究

Theoretical Analyses of Solvent Polarity Scales Using Molecular Surface Electrostatic Potentials;

基于分子表面静电势参数分析溶剂的极性性质

The effects of solvent′s polarity on crystal growth of hexadecyl hydrogen maleate (HHM);

溶剂极性对马来酸氢十六烷酯(HHM)晶体生长的影响

Properties of High Impact resistant Polar Polypropylene Material;

高抗冲聚丙烯极性材料的研究

It showed that the polar of solvent have a great effect.

研究了溶剂对对溴苯酚生成的影响,研究结果表明,溶剂极性对对溴苯酚生成有很大影响,HBr对对溴苯酚生成无催化作用,但对邻溴苯酚生成有催化作用。