需要时 meaning in English
s.o.s
Examples
- Adjust scale if necessary so it is balanced .
需要时再挪准磅秤使之平衡。 - He helped me in my hour of need .
他在我需要时帮助过我。 - Instead, ad-hoc groups are formed as the need arises .
相反地，只是在需要时成立一些特别小组。 - If desired, the perturbed wave function may be normalized at the end of the calculation .
当需要时，可在计算最后将微拢波函数归一化。 - It may also provide drainage and give added protection against frost action when necessary .
它具有排水作用，但在需要时也增加保护抗冻作用。