信息安全 信息系统安全防护技术 释文 one-time password 一次性口令
- drilling technology
- drilling theory
- drilling time
- drilling time curve
- drilling time logging
- drilling tool
- drilling tool bypass valve
- drilling tool weighting scale
- drilling workload index
- drillion
- drill pipe
- drillpipe
- drill pipe power tong
- drill pipe sticking
- drill plough
- drill rig
- drill rigs for soil mixing wall
- drill rod
- drill seeder
- drill stem test
- drill string
- drill string non-return valve
- drill-string stabilizer
- drill string test
- drill tools measuring