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pro vyhledávání: '"吳志堂"'
Autor:
Wu, Jyh-Tang, 吳志堂
86
The purpose of this research mainly uses fly ash with different fineness and slag to replace cement, and studies the influence on workability and compressive strength of mortar and concrete. The factors of experiment are (1)pozzolan replaceme
The purpose of this research mainly uses fly ash with different fineness and slag to replace cement, and studies the influence on workability and compressive strength of mortar and concrete. The factors of experiment are (1)pozzolan replaceme
Externí odkaz:
http://ndltd.ncl.edu.tw/handle/01936779813420592238
Autor:
Chih-Tang Wu, 吳誌堂
104
Phytoplasmas are unculturable bacterial pathogens that are transmitted by phloem-feeding insect. Disease symptoms caused by phytoplasmas including dwarf, witches''s broom, leaf yellowing, virescence and phyllody. Previous studies have shown
Phytoplasmas are unculturable bacterial pathogens that are transmitted by phloem-feeding insect. Disease symptoms caused by phytoplasmas including dwarf, witches''s broom, leaf yellowing, virescence and phyllody. Previous studies have shown
Externí odkaz:
http://ndltd.ncl.edu.tw/handle/02961356577232123828