1)admiralty metal,海将金属2)Lygodium,海金沙属3)planishing hammer,将金属板敲平的锤子4)stamp out rings from metal sheets,将金属板裁成环状5)Deep-sea polymetal,深海多金属6)sponge,海绵金属<能>
用法例句
Spore morphology of 20 species (10 species from China and 10 species from other countries) in the genus Lygodium (Lygodiaceae) was investigated under scanning electron microscope(SEM) and transmission electron microscope (TEM).
