在这种调弦下, 其他的和弦只要在指板上来回滑动横按就可以了.With a tuning, other chords may be played by simply barring aa slide.乌木指板, 枣木配件和乌木配件两种, 红木尾柱, 金属拉线板.Ebony fingerboard, both jujube wood and ebony sets can be supplied; rosewood end pin, meta...
Menstruum crystal is widely used in cephalosporin production in view of its stability and high purity.溶媒结晶由于其稳定性和纯度高被广泛用于头孢菌素生产中.Objective: Compare the effect on alkaloids of Bulbus Fritillariae thunbergii in different m...