carbon test
碳含量试验 carboloy test
游离碳含量试验 free carbon content test
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采用大田试验法研究了玉米生育期内土壤微生物量碳和酶活性动态变化特征。
The dynamic changes of soil microbial biomass Carbon (c) and soil enzyme activities during growth of corn were studied in field experiment.
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