磁场作为实验物理学家、化学家和生物化学家的基本工具已有多年了。由于磁场已广泛应用于作为测试物质的电子和核子的灵敏探测工具,使得我们有可能进一步了解周围环境—从半导体单晶中的电子流动到人体中发生的化学过程。提高强磁场的分辨力或是扩大实验数据范围,是客观需要的必然结果。作为在强磁场低温致冷系统商业产品 Magnetic fields have been the basic tools of experimental physicists, chemists and biochemists for many years. Since magnetic fields are widely used as a sensitive detection tool for electrons and nuclei as test substances, it is possible to gain a better understanding of the surroundings - from the flow of electrons in semiconductor single crystals to the chemical processes taking place in the body. To improve the resolution of strong magnetic field or to expand the scope of experimental data is an inevitable result of objective needs. As a commercial product in cryogenic refrigeration systems with strong magnetic fields