数据库 数据库新技术 释文 term frequency, TF 数据项频率 人工智能 计算语言学 释文 term frequency 项频率
- PM algorithm
- P. Malliavin
- P. Malliavin (1925—2010)
- PMBOK
- PMBus
- PMC
- PM code
- P M&E
- PME
- p-mean
- p-menth-1-en-8-ol
- p methoxybenzaldehyde
- p-methoxybenzaldehyde
- PMF
- PMH
- PMI
- p-minimal condition
- PMIS
- p-mixed group
- PMMA
- PMN
- PMN-PT-PZ piezoelectric ceramic
- PMNPTPZ piezoelectric ceramic
- PMN-PT-PZ压电陶瓷
- PMNPTPZ压电陶瓷