溶液和熔体的粘度等性能曲线并不呈现平坦.Among the properties which do not show a leveling - off are the viscosities of solutions and melts.探讨了PET酯 化、聚合生产过程对熔体直接纺丝的影响.The effect of PET production on melt direct - spinning is discussed.用熔体发泡法...
The exploit machination is in backward status in tourism research usually.旅游地开发策划历来在旅游研究领域里处于比较滞后的地位.The spy , a past master of machination and maneuver, was caught at last.这个老奸巨滑的间谍终于被逮住了....