工学 工程水力学 释 drop 跌水 使上游渠道水流自由跌落到下游渠道的连接建筑物。
drop ①滴 ②下落，降落
数据库 数据库管理系统及其实现技术 释文 drop 撤销
- Horizontal Marketing System
- horizontal measurement
- horizontal meridian circle
- horizontal mirror
- horizontal mounting
- horizontal multistage fracturing
- horizontal open hole completion
- horizontal open hole packer completion
- horizontal organizational structure
- horizontal parallax
- horizontal parallax，X-parallax
- horizontal pendulum
- horizontal percussion and wind music
- horizontal plane
- horizontal position
- horizontal pre-packed screens completion
- horizontal product differentiation
- horizontal projection
- horizontal projection plane
- horizontal protection
- horizontal public opinion confrontation
- horizontal refraction
- horizontal refraction error
- horizontal resistance
- horizontal resolution