Objective We treats the stubborn lower jaw rubs root of a tooth point Zhou Yan.
目的治疗顽固性下颌磨牙根尖周炎。
The dry root weight under high N level was lower than that under low N level;
单株玉米的根干重随水分条件的改善而提高,高N处理的玉米根重低于相应的低N处理;
The dry root weight under high N level was lower than that under low N level;
单株玉米的根干重随水分条件的改善而提高,高N处理的玉米根重低于相应的低N处理;
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