The price and comparativeness of foodstuff are the key factor of costs of the foodstuff production.
粮食生产成本情况是决定其价格和市场竞争力的关键因素。
The analysis units are being broadened, the comparativeness of the research object and data are being valued, which are all closely related to the issues of research methods.
分析单位不断拓宽，注重研究对象和资料数据的可比性，这些都与研究方法问题密切相关。
The comparativeness and the reproducibility experiments carried out in the late stage show that the designed test system is stable and reliable, and the obtained test results are real and effective.
通过后期开展的对比性及重现性实验表明，组建的测试系统稳定可靠，获得的试验结果真实有效。
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