- surface controlled subsurface safety valve
- 地面 the earth's surface; ground
- 控制 control; dominate; regulate; ...
- 井下 in the pit; under the shaft
- 安全阀 safety valve
- 地面控制的井下安全阀 scssv
- 井下控制井下安全阀 subsurface controlled subsurface safety valve
- 井下安全阀 dhsv; downhole safety valve; dsv; storm valve; subsurface safety valve
- 地面控制的球型安全阀 ball type surface controlled safety valve
- 地面控制的井下阀 downhole surface-operated valve
- 水下安全阀 underwater safety valve; usv
- 井下安全 downhole safety
- 地面安全阀 surface safety valve
- 地面控制 field control; ground control; ground-control
- 地面控制的 ground control; surface-controlled
- 地面控制点 gcp; ground control point
- 地面控制起 ground controlled
- 地面控制绳 ground control line
- 地面控制员 ground controller
- 地面控制站 ground control post; ground control station
- 控制安全阀 pilot relief valve
- 地面控制测量 ground control survey
- 地面控制的阀 surface-actuated valve
- 地面控制进场 gca; ground control approach; ground controlled approach; ground controller approach; ground-control approach; ground-controlled approach
- 地面控制拦截 gci ground controlled interception
- 地面控制雷达 ground controlled radar
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