试验以组织培养获得的柔枝松不定芽为对象，对其进行不定根诱导研究。
The adventitious shoots of limber pine were taken as objects to investigate their induction of adventitious roots.
秘鲁具有丰富的松树资源，主要树种有展松、 辐射松、粗糙枝松和粉枝五针松等。
Pine resources are abundant in Peru. Main pine species are Pinus patula, P. radiata, P. montezumae and P. pseudostrobus .
提出了预测铸钢件中缩松缺陷的数值方法，考虑了传热、枝晶间液相流动和气体析出等因素。
A numerical analysis method is presented to simulate the shrinkage porosity formation in steel castings on the basis of heat flow, interdendritic fluid flow and possible evolution of dissolved gases.
采用着色腐蚀技术，金相显示了球墨铸铁缩松区中奥氏体枝晶组织形貌，分析了球铁缩松的形成机制。
The morphology of austenite dendrites in shrinkage porosity in nodular iron is displayed by the color etching technique and the formation mechanism of shrinkage porosity has been analyzed.
采用着色腐蚀技术，金相显示了球墨铸铁缩松区中奥氏体枝晶组织形貌，分析了球铁缩松的形成机制。
The morphology of austenite dendrites in shrinkage porosity in nodular iron is displayed by the color etching technique and the formation mechanism of shrinkage porosity has been analyzed.
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