index for investigation 为考察指标
Methods:To consider Sugarcane total alkane alcohol as effective part objective, total alkane alcohol and octacosanol as investigation index, determine content by gas chromatography method.
方法：以甘蔗滓总烷醇为药材有效部位目标产物，并以总烷醇及二十八烷醇为主要考察指标，用气相色谱法进行含量测定。
Through field investigation and soil fertility index analysis, causes and mechanism of fertility degradation of black soil in the Songliao Plain were explored.
通过田间调查和土壤肥力指标分析，探讨了松辽平原玉米带黑土肥力退化的原因和机理。
Objective to evaluate the effect to caries of the fixed appliance by the investigation of plaque index on the crown surface of teeth at the different stages.
目的通过调查固定矫治器治疗中牙冠表面托槽周围的牙菌斑指数评价固定矫治器对龋病的影响。
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