An electronic stopping cross section formula for heavy ions at low yelocity is obtained within the uniform free electron gass model and perturbation limit.
在均匀电子气模型和微扰极限成立的条件下，给出了低迷离子在固体中的电子阻止截面公式。
2
Setting up an energy balance analysis model of heavy oil gathering system and gives evaluation index and calculation formula.
建立了稠油集输系统的能量平衡分析模型，给出了评价指标及其计算公式。
3
This paper has provided a projection formula of steam injection parameters for HCZ model according to actual situation of heavy oil reservoirs.