...: Electromagnetic Crystals; Photonic crystals; Sterelithography; gel-casting 0 引言 电磁晶体（Electromagnetic Crystals）是一种介电常数呈周期性分布的人造复合介质材 35 料。
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这台电磁式机器一直使用到1959年，然后就被遗弃在灰尘中，因为到了那个时期，首先使用电子管、接着晶体管、然后集成电路芯片的真正电子计算机先后问世。
The electromagnetic machine remained in use until 1959, by which time it was left in the dust by true electronic computers using first vacuum tubes, then transistors, then chips.
拥有更低峰值电流和场效应晶体管漏源极开通电压的800伏特准谐振设计展示出一次侧传导电磁干扰降低的优势。
The 800v quasi resonant design with lower current peak and lower drain-source voltage during turning on of the MOSFET demonstrates advantages in conducted EMI spectra regarding the primary side.
利用光子晶体的缺陷可以实现引导电磁波的目的，可以制作各种各样性能优异的光子晶体光学器件。
We can use the defect in the photonic crystal to guide the electromagnetic wave, and this photonic crystal with defect can be used to make photonic crystal devices.
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