"偏旁部首"用英语怎么翻译？

让我来告诉你
radical of component
OK?

偏旁:
radical
a radical on one side of a character
Chinese character component

部首:
division header
key radical
radicals by which characters are arranged in traditional Chinese dictionaries

应为英语是由字母组成 所以没有偏旁部首一说

意译下来老外未必能明白 不过可以参考~