矿业产值在上一季度暴跌了33%后，由于全球商品价格上涨，第二季度上涨了5.5%。
Thanks to the rise in global commodity prices, it expanded by 5.5% in the second quarter, after crashing by 33% in the previous quarter.
美国商务部说，用于衡量商品和服务总产值的GDP在第四季度的下滑速度相当于每年下滑3.8%。
The US commerce department said gross domestic product, which measures total output of goods and services, plummeted at an annualised rate of 3.8% in the three months to December.
为给商品薯的科学收获时间提供理论参考，设置不同收获时间对马铃薯大西洋产量及产值的影响试验。
Atlantic, a potato variety, was tested under different harvest time to study the effects on yield and output value for providing the theoretical basis of rationally harvesting commercial potato.
为给商品薯的科学收获时间提供理论参考，设置不同收获时间对马铃薯大西洋产量及产值的影响试验。
Atlantic, a potato variety, was tested under different harvest time to study the effects on yield and output value for providing the theoretical basis of rationally harvesting commercial potato.
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