Reluctometer
磁阻签质仪(检查钢制品质量)
🗣️ 情景例句
It's our school, but we can't vote.
那是我们的学校 ，可是我们却不能投票。
More die by food than by famine.
饥馑而死的少，饱食而死的多。
Are you ready to sign?
准备好可以签名了吗？