[问答题]
The units for the coefficilodrs y 0+5opw ys ha-q+6f3sbe xs84/ent of q-7m74q v4r pqp(pzxp linear expansion $\alpha$ are $(C?)^{-1}$ and there is no mention of a length unit such as meters. Would the expansion coefficient change if we used feet or millimeters instead of meters? Explain.
