系统软件 操作系统 释文 concurrent control mechanism 并发控制机制
- ephedra
- ephedra family
- ephedra root
- ephedrine
- ephemeral
- ephemeral active region
- ephemeral plant
- ephemeral range
- ephemeral region
- ephemerides
- ephemeris
- ephemeris astronomy
- ephemeris day
- ephemeris error
- ephemeris errors
- ephemeris hour angle
- ephemeris longitude
- ephemeris meridian
- Ephemeris of the Minor Planets
- ephemeris reference frame
- ephemeris second
- ephemeris sidereal time
- ephemerist
- ephemeris time
- ephemeris transit