Megaperm
镍锰铁高导磁率合金
🗣️ 情景例句
Of course not, Richard.
当然不会有 Richard。
Do you often learn geography on the weekend?
你常常在周末学地理吗？
All this was comparatively slow until, with the coming of science, the tempo was suddenly raised.
所有这些发展都比较缓慢，而随着科学的到来，增长的速度才突然加快。