Linked tetra-shaft and double-cantilever flat flap gate is a new type of structure in water conservancyrnprojects ,but the traditional method is now adopted in
Soybean is generally recognized as a source of edible and the deoiled meal is seen as a source of protein inrnanimal feed. In recent years. However,more interes
During the design of pipeline,the determination of local resistant coefficient is often come arcoss. Thernsudden enlargement local resistant coefficient ζ1 = [
The even degree of animal population is generlay measured by the coefficient of variation of major eco-rnnomic characters. Facing the coefficient of variation,a
The effects of various Ca2+-modifying drugs on moue egg fertilization were studied. Ca2+ chelator,rnethylen glycol-bis-(2-aminoethyl)-tetracetic acid (EGTA) ,an