山顶区 Peak District ; Hilltops
扇顶区 fanhead
圆顶区 dome area
国家和地区顶级域名 country code top-level domain ; CCTLD
英比奥山顶景区 Imbiah Lookout
亚太地区顶级域名组织 APTLD
顶盖前区 [解剖] pretectal area ; pretectal region ; [解剖] area pretectalis ; pretectal nucleus
顶空盲区 [航] upper space of silence ; overhead cone of invisibility
委内瑞拉的平顶山区 venezuelas tepuis
气晖观测是研究中层顶区动力过程的重要方法。
Airglow measurement is an important method of studing the dynamic processesin the mesopause region.
并在气顶区、油气界面及油区建立了一套观察系统。
For this, a set of observation system is set up in gas cap zone, gas-oil contact and oil zone.
结果表明，倒生的棉花胚珠可以分为合点区、株柄顶区、腰区和珠孔区。
The results showed that ovule surface might bedivded into the chalazal zone, crest zone, middle zone and the micropylezone.
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