substrate composition的用法和样例：
例句
- To create the channels, the researchers patterned cell-adhesive and cell-repellant chemical compounds onto a substrate.
为了建造通道，研究者将促进细胞粘附和细胞排斥的化合物分别涂布在培养基上。 - This is in turns heaps in the processing , joins the surplus accessories in the substrate.
这是在翻堆过程中，往培养基里加入剩余的辅料。
