null ①零，零的 ②无效的，无价值的 ③类光[的]†
null 零的；零
数据库 数据库管理系统及其实现技术 释文 null 空值
- soluble
- soluble by radicals
- soluble cloth
- soluble concentrate
- soluble crystal
- soluble egg antigen
- soluble equation
- soluble fiber
- soluble group
- soluble guanylatecyclase
- soluble guanylatecyclase; soluble guanylyl cyclase
- soluble guanylyl cyclase
- soluble organic matter
- soluble phase
- soluble polynomial
- soluble receptor
- soluble rock
- soluble support
- soluble system
- solute
- solute boundary layer at the crystal growth interface
- solute damage
- solute diffusion
- solute geothermometer
- solute potential