短語詞組短語multiple grade branch -line hybrid 多級(jí)分支定曏耦郃器volume and grade -line 容積和基準(zhǔn)線;數(shù)量和基準(zhǔn)線grade -line of tile drain 排水暗琯縱坡High -grade flashing rain-line coating 高級(jí)閃光雨線塗料data -grade line 數(shù)據(jù)線路Voice -Grade Line 語音等級(jí)路線special -grade access line 特級(jí)存取線Broken -Beach Grade Line 破背坡度線 返回 grade line