双向开放 two-way openness ; emphasis on both domestic and international markets ; two-way opening up
开放双行体 unclosed couplet
双结开放式机架 GKB
后开放双侧的颈总动脉 bilateral common carotid arteries
谢谢那一双双陪我写下青春年华的手，可以永远不放开吗？
Thank you that accompany me to write down our youth hand, can never let go?
采用井下仰斜钻孔双端堵水器导高观测技术对白庄煤矿综放开采条件下，覆岩破坏规律进行了实测，得出了导水断裂带的发育高度。
Adopting survey technology of double-head water-stopped machine flowing high of upward-inclined drillhole rock destruction rules were surveyed, development height of water conducted zone was gained.
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