三、十五孔加键新笛加键新笛的试制工作曾于1972年11月和1976年8月两次在上海管乐器厂进行。1976年11月完成了基本定型的十五孔加键新曲笛。新笛(见题头图)经过近四年的试用,证明改革的目标基本达到。1980年5月,又在北京民族乐器厂将原设计作了小的修改,制成的新曲笛、新梆笛可在民族乐队中配套使用。 (一)新笛的用材、管形和键结构 Three, fifteen hole plus key New flute key new flute trial work in November 1972 and August 1976 twice in Shanghai Wind Instrument Factory. November 1976 completed the basic stereotypes of the fifteen holes plus the new song flute. The new flute (see head map) after nearly four years of trial to prove that the basic goal of reform. May 1980, again in the Beijing National Musical Instrument Factory made the original design made a small change made of the new song flute, the new flute can be used in supporting the orchestra. (A) the use of new flute, tube and key structure