摘要：As a great threat to all livings on earth,waste artificial plastics now are everywhere,from oceans to our cells[1].The world cannot withstand the growing waste plastic in million tonnes every year,which has already caused environmental pollution and economic losses[2].Besides the efforts for preparing novel plastics with the self‐decomposition ability,methods are needed to clear away these waste plastics leftover from history or recycle well this organic carbon resource[3].Photocatalysis is a potential solution for the conversion of waste plastics under mild *** this perspective,we highlight the effect of photocatalytic approaches toward the generation of low carbon number organic products(C_(n) products,n≤8)from waste plastics,which can proceed under an inert or aerobic ***,critical analysis of the carbon source in products is necessary to reveal the active species for the C–X bonds(X=C,N,and O)cleavage of ***,we outline potential avenues for further development of this emerging field to enhance the yield of C_(n)(n≤8)products from waste plastics.

摘要：柱塞轴线倾斜式柱塞泵具有排量大、体积小的优点,在航空领域应用非常广泛,但其设计校核理论尚不完善。参考柱塞轴线平行式柱塞泵的相关设计校核理论,建立一套柱塞轴线倾斜式柱塞泵转子的设计校核公式,为该型号柱塞泵转子的设计提供参考。