basic cobaltous carbonate

例句：

1. 1. Basic knowledge of physics is required for this course.
   这门课程需要具备物理基础知识。
2. 2. The basic principles of the new system have been explained clearly.
   新系统的基本原理已经解释得很清楚。
3. 3. Basic research is crucial to understanding the disease.
   基本研究对于理解这种疾病至关重要。