- 垂 hang down; droop; let fall
- 球 sphere; globe
- 定 galipidine
- 中 hit; fit exactly
- 夹 double-layered; lined
- 垂球 plum ob; plumb bob; plummet; right sphere
- 铅垂球 lead plummet
- 三球定 trisphaeridine
- 摆式垂球 pendulum plumb bob
- 实中夹虚 excess complicated by deficiecy; excess complicated by deficiency; sthenia complicated by asthenia; sthenia with asthenia
- 虚中夹实 asthenia accompanied by sthenia; asthenia with sthenia; deficiency complicated weth excess; deficiency complicated with excess; deficiency mixed with excess
- 中夹海岭 mid-oceanic ridge
- 铅锤 垂球 垂线铊 测锤 plummet
- 定中坏 centering mechanism
- 定中丸 luihe dingzhong wan
- 定中线 alignment
- 定中心 [地测] centring; centre
- 定中爪 centering jaw; jaw centering
- 上下向中夹缩 split horizontal in; split horizontal out
- 左右向中夹缩 split vertical in; split vertical out
- 地球定向 earth organization
- 环球定位仪 global positioning system
- 垂球压敏式液位计 pre ure se itive pendant type level gauge; pressure sensitive pendant type level gauge
- 未用垂球校准的 unplumbed
- 用垂球测定垂直度 plumb perpendicular
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