adj.基礎(chǔ)的；基本的；根本的

The effe cts of three common white-making ingredients, which are Hydroquinone, Arbutin extract and Kojic acid, on tyrposinase were detected with L-Tyrosine as substrat e in vitro. 用L-酪氨酸酶作底物,體外測定了三種常用美白劑(對苯二酚、熊果苷、曲酸)對酪氨酸酶活性的影響。

the stainless steel substrat the thickfilm heater-element 不銹鋼基片厚膜電熱元件

Substrat 基質(zhì)