Spectrodensitometer
光密度计
🗣️ 情景例句
Nancy, would you like to come over the day after tomorrow?
南西，你后天要不要到我家来？
Will you please spell his name for me?
请你把他的名字拼给我好吗？
Thus the rods, by falling, and by the direction in which they fell,
木棒倒下的多少和倒下的方向