结论：肠胃清口服液可通过抑制结肠癌细胞的黏附、运动、浸润能力以及控制MMP - 2、MMP - 9的分泌等抑制肿瘤的转移。
Conclusion: Changweiqing can restrain the invasion and metastasis of colon cancer by inhibiting their ability of adhesion, migration and secretion of MMP-2, MMP-9.
针对近距离相对运动的轨道控制问题，提出用常值小推力完成最优转移的方法。
An optimal orbit maneuver method based on continuous low thrust was presented to solve relative motion control.
文中基于卫星相对运动状态转移方程，推出了星座双脉冲式变轨控制的理论解；
In this paper, thinking of three-satellite constellation, optimal impulse orbit transfer is studied for constellation launching.
应用推荐