Under the system restriction, the level of the substitute cost relates to the contrary possibility, Business's competition, causes to plastic limit faced with the challenge.
在制度约束下，替代品成本的高低关系到违规的可能，而商家的竞争，使限塑面临挑战。
2
Hydraulic fluid power - housing for elastomer - energized, plastic - faced seals - dimensions and tolerances - rod seal housings.
液压流体动力。弹性体塑料面密封件的汽缸。尺寸和公差。活塞杆密封汽缸。
3
Hydraulic fluid power. cylinders. pistons housings for elastomer - energized, plastic - faced seals dimensions and tolerances.