on-board pattern-recognition device是什么?

on-board pattern-recognition device是什么? REC on board什么意思 on board什么词性? come on board on the board,on board, on a board ,ob board的区别大神们帮帮忙 pattern Pattern, on 还有on the board,on a notice board on board和on board的区别及用法,是on boards和on board。 on the board和on board的区别, aboard 等于 on board吗 laden on board the vessel Clean On Board B/L on the board of directors 英语 翻译 go on board CHIP ON BOARD是什第意思 get on与board区别