정의: Preparation may refer to:Preparation (dental), readying a tooth for dental restoration Preparation (music), the consonant pitch or chord which precedes a dissonant nonharmonic tone Preparation, Iowa, a ghost town in the United States The Preparation, a 2017 South Korean film Preparations (album), by Prefuse 73, 2007
| 핵심 연구 분야 | Safety |
|---|---|
| 주요 연도 | 2022년 |
| 주요 연관 키워드 | cleaning |
| 좋아요 수 | 0 |