Via pollen - tube pathway the indica rice HD - 357 was transformed with plasmid pTW - α containing Bar gene and PIN ⅱ gene .

利用花粉管通道法，用含抗除草剂基因bar及抗虫基因 pin2的质粒pTW-α转化中籼HD357。

Distribution of the force acting on connecting rod hole via piston pin and crank pin ;

活塞 销、曲柄销对连杆 孔的分布作用力的研究；