指键的装置指键的设置始于16和17世纪初,原始的方法是用一条金属的轴将键杆横穿在管身上的木环的孔中(如图9A).为了使指键更牢固,17世纪末将管身车出突起的两翼,并凿槽将指键嵌在共中(如图9B).这种形式的装置几乎沿用至18世纪,主要用于长笛、双 The key device refers to the arrangement of the keys which began in the 16th and early 17th centuries with the original method of traversing a key rod through a hole in a wooden ring on the pipe body with a metal shaft (see Fig. 9A) Firm, the late seventeenth century will be the body of a car out of the protruding wings and crooked finger keys embedded in the common (Figure 9B) This form of device used almost until the 18th century, mainly for flute, double