常見例句雙語例句The tangent of the main influencing angle is an important parameter for mining subsidence prediction and surface displacement range demarcation.主要影響角正切是開采沉陷預(yù)計(jì)的重要參數(shù)，對于地表影響范圍的確定具有重要的意義。www.jsks.net.cn 返回 tangent of an angle