substrate基本解释

n,基质；基片；底层（等于substratum）；酶作用物,同近

As chemical precursors stream onto the surface of a rolling metal or plastic substrate, they react with one another to form a network of nanoparticles..各化学母质流向滚动中的金属或塑料基片的表面，他们互相作用，形成一层纳米级微粒网状结构。

（土地）底层,基础英释中释nthe substance upon which an enzyme acts

glass substrate,玻璃衬底.短语