maximum payload ratio 最大有效载荷比

drag-payload ratio 阻力有效载荷比

over all payload ratio 总有效载重比

over-all payload ratio 总有效载重比

weight to payload ratio 相对重量

payload mass ratio 有效载荷比

payload-weight ratio 载重自重比

payload-structure-fuel weight ratio 有效载荷

payload-to-launch ratio 有效载重有效发射重量之比