| 释义 | 
             
                Gada, R.
                
            gaddern. 钻机架;凿孔机;凿岩机;创煤镐gadgetryn. 小配件;小玩意;小机件
 读、写、算dú  _ xiě  _ suàn 
 the three R's阴极射线管yīn jí shè xiàn guǎn 
 cathode-ray tube (CRT); cathode-ray lamp; C-R tube絮凝反应xù níng fǎn yīng 
 flocculoreaction; F. R.每分钟转数měi fèn zhōng zhuǎn shù 
 revolutions per minute (r/m)
 |