magnetic ink character

例句：

1. 1. This new type of magnetic ink is more durable than the old one.
   这种新型的磁性墨水比旧的更耐用。
2. 2.The magnetic ink character on the paper is very clear and easy to read.
   纸上的磁性墨水字符非常清晰，易于阅读。
3. 3. The scientist used magnetic ink to write down his findings.
   科学家用磁性墨水写下了他的发现。