凹底车 depressed centre flat wagon ; drop center car
凹底平车 [铁路] Depressed center flat car ; Well Wagon
颅底凹陷 basilar impression ; basilar invagination
凹底刨 [木] Concave plane
凹底架 depressed center underframe
中凹底辊 concave ground roll
凹沟底 bottom of the groove
颅底凹陷症 basilar invagination ; basilar impression
储罐底部凹陷 tank pockets
中颅凹底巨大海绵状血管瘤的诊断和治疗。
Diagnosis and Treatment for the Giant Cavernous Hemangiomas in the Middle Fossa.
目的：为了更完全地切除中颅凹底内外沟通性肿瘤。
Objective: To completely remove the neoplasm at both the base of the middle cranial fossa and the infratemporal fossa.
凹底磨鞋可用于磨削井下小件落物以及其它不稳定落物。
The concave bottom mill shoe is used to grind downhole small objects and other unstable fallen objects.
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