并以牛筋将(jiāng )皮套紧(jǐn )紧地捆扎在了木漏斗的(de )底部。接下来,他取过一根被贯穿了竹节的(de )毛(máo )竹,将它与(yǔ )弹簧的另一端连接了(le )起来(lái )。连好(hǎo )以后,他在(zài )毛竹的外(wài )壁和皮套子(zǐ )的内部刷胶(jiāo ),并将皮套子套在了(le )竹筒上面。以牛(niú )筋将皮(pí )套子紧(jǐn )紧捆扎(zhā )在竹筒上面后(hòu ),他又取(qǔ )过一根弹簧,装到了竹(zhú )筒的另(lìng )一端。如(rú )法炮制(zhì ),