弱稠集 2) weak~* dense 弱*稠 3) dense set 稠集 4) heavy oil gathering 稠油集输 1. Energy balance analysis and energy-saving countermeasure ofheavy oil gatheringsystem; 稠油集输系统能量平衡分析及节能对策 5) Q-dense set Q-稠集
X在X**中弱*稠，于是X**含于Z. 因此，X**含于Y，故P在X**中弱*稠.