Check seals on fridges and freezers regularly.定期检查冰箱和冷冻柜的密封装置。Refrigerator - freezers will hold provisions to feed the 23 crew and 70 passengers for about a week.冷藏柜里的食品足够二十三名机组人员和七十名乘客维持大约一周的生活所需.Polyurethane is a commo...
Two men answer-ing the description of the suspects tried to enter Switzerland.与描述的疑犯样子相符的两名男子试图进入瑞士。The authorities will be legally bound to arrest any suspects.当局负有逮捕所有疑犯的法律责任。He suspects there's a conspiracy to co...
以单质碘为催化剂合成了环戊酮乙二缩酮.Cyclopentanone ethylene ketal was synthesized with I _ 2 as catalyst.传统的缩酮化、酯化反应工业上多采用浓硫酸作催化剂.Traditional ketalization and esterification reactions are usually catalyzed by concentrated acid in industr...
The mechanism of utilizing negative activators to passivate gasification reaction of coke is analyzed.分析和研究了利用负催化剂钝化焦炭气化反应的机理.This monograph is a primer to coal and biomass gasification technologies.这个专题著作是煤和生物量气化技术的一本入门...