Conversion methods of freshwater snail tissue dry mass and ash free dry mass

This paper has studied the relationships between shell length (L) and whole body′s wet weight(W),dry weight of shell (S).

) common in the Yangtze Basin were selected to explore the relations of their five shell dimension parameters, dry and wet mass with shells with their tissue dry mass and ash free dry mass.

Effect of partially deshelled culture of chick embryos with eight sealing methods;

According to the two-plane balancing theory of rigid rotor and the general dynamic balance principle of six cylinders crankshaft, the dynamic balancing problem of six cylinders crankshaft has been theoretically analyzed and establish a practical model for ridding unbalance.