hoisting and lowering meaning in English
升降钻具
Examples
- The meteorological station was automated in 1992 and scientific assistants were no longer posted at cheung chau . the task of hoisting and lowering of signals was taken over by the property attendants
一九九二年航空气象站转为自动气象站后，便再没有科学助理当值，只留下产业看管员驻守，负责悬挂风球。 - The meteorological station was automated in 1992 and scientific assistants were no longer posted at cheung chau . the task of hoisting and lowering of signals was taken over by the property attendants
一九九二年航空气象站转为自动气象站后，便再没有科学助理当值，只留下产业看管员驻守，负责悬挂风球。