对取样条件、试样制备、测量方法进行探讨，指出高碳钢化学分析的控制要点。
The sampling conditions, sample preparation and measure methods are discussed and the control points of chemical analysis of high carbon are pointed out.
控制实验与植物化学分析结果表明水稻挥发性物质和其它一些次生代谢物影响稻飞虱的寄主选择。
The results of control tests and phytochemistry analysis show that volatiles and allelochemicals affect host selection behavior of Nilaparvata lugens.
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