First, it is pointed out, after the probe into the specific concept of full numbers for the Chinese nation at the angle of her classical philosophical thinking and of the morphology of the Chinese characters, that “three" and “nine", whether in their overt or covert forms, are the specific full numbers in Chinese.

The influence of full load coefficient on effective load is introduced.

After applying this profile in design of valve-train cam of motorcycle engine,it is proved that this cam profile have same and better characteristics than cam profile of Honda motorcycle CG engine,which can not only maintain a high ample factor and increase output power,but also reduce impact,vibration and noise of engine which is working.

According to the calculated results, with higher ample factor, FB-Ⅱ cam is an ideal selection for engine with a s.

Variation of growth,survival rate and condition factor of juvenile Oreochromis niloticus,Sarotherodon melanotheron and Israeli red tilapia at different salinities;

And the feeding rate and plumpness index of Channa asiatica changed with the season, highest in the summer and lowest in the winter.

The formula of the relation between loading cubage and liquid level of railway tanker is deduced,a model of loading oil level for instance 50 tons standard railway tanker is built,it solved an approximately formula of full coefficient and liquid level,accordingly obtained current liquid level.

Approximate formula of relation between liquid level and full coefficient has been solved taking a standard 50 t railway tanker as example.