[问答题]
State Einstein's principle bwg pm+:s:9vu)ttppa.i-rvtej34v1 of eq2; nd,fjaznl87d1yt m vv a6a5g;fvf .uivalence.
参考答案: No experiment can be performed that could distinguish between a uniform gravitational field and an equivalent uniform acceleration.
or
Gravitational mass is equivalent to inertial mass.
