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波姆体系形成的必然性(略)波姆式键结构的局限性在复键中,和环键相连接的盖键实际上是起升降变音的作用的。但对与之同组的两或三个环键来说,它与相邻的环键同步“开/闭”构成大二度音程;如果要使其单独“开/闭”构成小二度音程的话,就须由与之距离较远的其它孔指(按环键)来控制。这样在转调时就形成交叉指法。例如,在长笛上奏C调、
The inevitability of the formation of the Borm system (omitted) Limitations of the POM bond structure In the complex bond, the bond bond to the ring bond actually acts as a rising / falling diurnal sound. However, for two or three ring keys in the same group, the ring key “on / off” synchronizes with the adjacent ring keys to form a second-degree interval. If it is to be turned on / off individually to form a second-degree interval It must be controlled by other hole fingers (by ring key) that are far away from it. This formed when the transfer of cross-fingering. For example, play C flute,