gatch pad填料垫块
gatch oil蜡油
coke gatch焦化蜡油
Gatch bed盖奇氏床;活动靠背床;高曲氏床
coker gatch焦化蜡
gatch gAtF含油蜡
hospital gatch-bed附支架病床
gatch access road填料便道
Gatch h bed盖奇氏床