短語詞組短語drop detector head 點滴檢測器檢測頭drop of head 水頭降drop -head 縮頭;折疊式車頂橋車drop the head 低頭knee drop and head lock 跪膝夾頭前摔drop head coup 敞蓬小轎車drop in pressure head 壓強水頭差降;液體壓力差降drop bar firing head 投棒點火頭drop of total head 全壓頭下降;總壓頭下降 返回 drop head