Minimizing the numerical dispersion in the FDTD calculation region and setting the absorbing boundary have been discussed also.
并简要讨论了FDTD方法的数值色散和计算空间吸收边界的设置等问题。
The electrotome is used matching with the smoke absorbing device, the smoke don't spread at operation region and don't stimulate the operator, and also don't affect the health of medical staff.
电刀配合吸烟装置使用，烟雾不会在手术部位四处蔓延而刺激操作人员，不影响医务人员健康。
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