Pipes are widely used to transport gas,oil and water in industries.Drag reduction in pipes is an increasingly concerned problem to save energy.Some researches h
On the basis of energy and shape method for the determination of the valence bond (VB) structures of crystal, the valence bond structure of titanium is redeterm
低丘红壤区农林间作系统的水分生态特征及生产力张斌张桃林(中国科学院南京土壤研究所,210008)ydraulicEcologicalCharacteristicsofAleyCroppingSystemsandItsProductivityinLo...
Hydrological characteristics and productivity of agroforestry system in hil