求翻译：磁力搅拌器是化工、医药卫生、环保、教育科研等行业的实验室对液态进行精密稳定搅拌的常用工具；运行平稳、无级调速，能在较广的速度范围内对液态进行搅拌，特别适合小体积的样品。是什么意思？

Magnetic stirrer is chemical, pharmaceutical industries such as health, environmental protection, education and scientific research laboratory precision stability on liquid mixing common tools; run smooth, stepless speed, able to stir the liquid within the broader speed range, especially for small samples.