polymetallic多: many; much; more金属: metals genus的: 4次方是 The fourth power of 2 i ...多金属层带: multiple metal layer tape多金属结壳: polymetal crust下载手机词典可随时随地查词查翻译关注微信公众号:chachacidian,回复:多金属的,即可在微信中查询翻译