重型大型机械更反映了一个地区生产能力和科研能力的高低。

Heavy large mechanical more reflects a area production ability and scientific research ability of discretion.

youdao

重型大型机械更反映了一个地区生产能力和科研能力的高低。

Heavy large mechanical more reflects a area production ability and scientific research ability of discretion.

youdao