During the extruding forming of spline tube, it is very important to calculate extruding pressure, do bending analysis of losing stability, and choose friction and lubricating mode for the feasibility analysis of extruding forming, as well as the process analysis of spline forming.

As the key parts for transmission of power and torque, the hollow spline tube is often applied in those spline connections, which needs high centering precision, high torque transfer capability or high transmission slip ratio.

The spline tube differs greatly from the spline shaft parts in the cold roll forming process,which has a complex process with large blank deforming quantity.

Determination of Lobetyolin in Radix Codonopsis Tubulosae of Guizhou;

Observation of pollen tube germination of Platycodon grandiflorum by fluorescence microscopy;

Studies of pollination experiment and the growth of pollen tube under fluorescent microscope on almond;

Correlation analysis between induction of maize parthenogenesis haploid in vivo and intersperm nucleus distances in pollen tubes germinating in vitro of male parent;

The nutritional components of Smilacina henryi (bekev).