Based on the yield criterion and plastic potential theories, a plastic constitutional relation, yield condition and yield curve equation in plane strain for powder metallurgical material were derived.
粉末冶金材料屈服条件是粉末冶金材料广义塑性理论的基础，其数学表达式对粉末冶金材料广义塑性理论方法的建立有重要影响。
The yield response of two common corn cultivars (Qiandan NO. 4 and Jingza NO. 6) to inoculation with Azospirillum brasilense strain 8018 was studied under field condition in Puding county.
用巴西固氮螺菌8018菌株菌肥拌黔单4号和京杂6号玉米种子于普定县三块田村进行了田间应用实验。
The yield response of two common corn cultivars (Qiandan NO. 4 and Jingza NO. 6) to inoculation with Azospirillum brasilense strain 8018 was studied under field condition in Puding county.
用巴西固氮螺菌8018菌株菌肥拌黔单4号和京杂6号玉米种子于普定县三块田村进行了田间应用实验。
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