Various domestic & abroad examples revealed that for outboard engine and high speed planning boat, the bottom step(s)helps to reduce resistance,increase propeller propulsion efficiency and finally increase ship s speed.

It indi-cated that the methods of establishing bermudagrass turf,understanding the connotation of overseed-ing,managingtwotransitional stages which should be paid more attentionto when selectingthe way ofoverseeding Ryegrass on Bermudagrass when establishing evergreen turf in cli matic transitional zone.

,to make a research on elite man s transitional stage technique of China.

Teaching and research university is the transitional stage between teaching university and research university,focusing both on the teaching and research,the teaching and social service,the graduate education and undergraduate education,This kind of university takes the undergraduate education as the key duty.

There exists a transition phase from growth phase with glycerol as carbon source to expression phase with methanol as carbon source when Pichia pastoris was used as heterogous protein expression system.

This paper makes a bio-mechanics analysis and research about the moving section and shot speed and rhythm of Chinese excellent shot put athletes when the putting movement is in the transition phase.