It can fully utilize space height through upper platform supported by bottom rack * arr - angement of second rack on the platform . it ' s a very typical application of utilizing height during manual picking rack 通过底层货架支撑上层平台，并且在平台上排布第二层货架，可以充分利用空间高度，是人工拣选货架中利用高度的典型应用。
