Gadiometer
磁强梯度计
🗣️ 情景例句
How can I forget?
怎么忘得了?
Do you have nay objection to the stipulations about the packing and shipping marks?
有关包装运输唛头的条款你们有什么异议吗？
How did the bees know exactly in which diection to fly?
蜜蜂是怎样确切地知道朝哪个方向飞呢？