必须使用 meaning in English
sir/dear sir
Examples
- In computing the kinetic energy of a body, consistent units must be used for m and v .
在计算物体的动能时，对m和v必须使用适当的单位。 - Great quantities of cooling water must be available for condensation of the ethylchloride .
为了凝结氯乙烷气体，必须使用大量的冷却水。 - For the numerical solutions of these problems large electronic computers must be used .
为了得到这些问题的数字解，必须使用大型电子计算机。 - Once the desired specific gravity is established, the same strength must be used henceforth .
所需的比重一经确定，以后就必须使用同一浓度的酸。 - Geodetic leveling should be done with staves in which the divisions are marked on a strip of invar .
大地水准测量必须使用刻度标于不胀钢片上的水准标尺。