minimum point

altogether, the authorities should make the law and regulations to guarantee the healthy development of tourism and reduce the damage of the environment to the minimum point.

同时，政府应当制定法规和采取措施保证旅游业的健康发展，将环境问题降到最低。

Calculated and analyzed the magnetic field spatial distribution of the current-carrying wires, the study found that when the wires with the small current, above the surface of the substrate near 50 microns generated one zero magnetic field point or one magnetic field minimum point.

详细计算和分析了上述载流导线磁场的空间分布，研究发现在导线中通以较小的电流并附加一定的偏置磁场，即可在基底表面上方50微米附近产生磁场零点或磁场最小值。

Using several mutually perpendicular square coils it is possible to create a spatial minimum point of magnetic field where a magnetically suspended superconducting ball is located. A dynamic demonstration of the Meisner effect can then be achieved by controlling the currents through each coil.

用相互垂直的数个线圈构造空间磁场的极小值点，通过计算机改变线圈中的电流，使此极小值点做受控运动，从而实现通过悬浮于该处的超导球对迈斯纳效应的动态展示。