This paper selected lumbers of Manchurian ash (Fraxinus andshurica), Manchurian walnut (Juglans mandshuricd) and Spruce (Picea jezoensis vai.koamvii) for manufa
The research method of this paper is based on the standards of American Society for Testing and Materials(ASTM).Four items that contain boring,mortising,shaping
The volatile oils from leaves of Michelia chapensis Dandy and M. foveolata Merr.ex Dandy were isolated by organic solvent extraction and their components were a
This paper lists the existing main problems that poplar industry faces in Jiangsu and analyses the causes and the activities of different industry related to ma
To identify the theoretic foundation for maintaining and improving high quality varieties and breeding new Fl hybrids, flower color segregation occurred in the