전문 번역가, 번역 회사, 웹 페이지 및 자유롭게 사용할 수 있는 번역 저장소 등을 활용합니다.
vervolgens 30 ml azijnzuur anhydride toevoegen en onder terugvloeikoeling gedurende 2 uren laten koken .
then add 30 ml acetic anhydride and boil for two hours so that the liquid flows back after condensation .
마지막 업데이트: 2019-05-31
사용 빈도: 1
품질:
gedurende 1 uur onder terugvloeikoeling laten koken met 3 ml watervrij pyridine en 3 ml azijnzuur anhydride .
boil for one hour with 3 ml pyridine and 3 ml acetic anhydride so that the liquid flows back after condensation .
마지막 업데이트: 2019-05-31
사용 빈도: 1
품질:
verwarm gedurende 30 min . bij 70 - 80 * c onder terugvloeikoeling en koel vervolgens in stromend water .
heat for 30 minutes at 70-80 ºc under a reflux condenser and then leave to cool under a stream of water.
마지막 업데이트: 2019-05-31
사용 빈도: 1
품질:
vervolgens het monster extraheren in water (50 ml/g monster) door onder terugvloeikoeling te koken gedurende 30 minuten.
then extract the sample in water (50 ml per g of sample) by boiling under reflux for 30 minutes.
마지막 업데이트: 2017-04-06
사용 빈도: 2
품질: