常見例句or an extension in both subwave three and five. 沒有統(tǒng)計過，個人感覺第三浪經(jīng)常發(fā)生延長。Keywords Subwave version;Acoustic emission;Unstable signal;On line location;Mined area; 子波變換;聲發(fā)射;非穩(wěn)態(tài)信號;在線定位;採空區(qū);odd subwave 偶次波 返回 subwave