dielectric substance的用法和样例：
例句
- A dielectric can thus affect the propagation of photons, which are nothing more than oscillating electric and magnetic fields.
介电质因此可以影响光子的传播，因为光子不过是振荡的电场和磁场罢了。 - Designers say that the worst problem caused by a HANE's radiation is deep dielectric charging from the MeV-energy electrons.
设计人员指出，高空核爆辐射线所造成最大的问题，其实是拥有百万电子伏特能量的电子所形成的介电质电荷。
