低频率组 low frequency group
系称为低频重组 low frequency recombination ; LFR
低频重组 low frequency recombination
品系称为低频重组 low frequency recombination ; LFR
与低温共烧高频组件 HF LTCC
组和低频刺激 Low frequency stimulation ; LFS
为慢性低频电刺激组 C LFES ; chronic low frequency electrical stimulation
慢性低频电刺激组 chronic low frequency electrical stimulation
结果：高频组准确率与低频组相近（P>0 .0 5 ） ，高、低频联合检查组确诊率高于低频组（P<0 .0 5 ）。
Results:Compared to the low frequency group, the diagnosis accuracy rate of high frequency group is nearly P >0 05 and the diagnosis accuracy was raised in high low frequency group.
时域有限差分法将声波基本方程表示为一个时间和空间的迭代方程组，实现对室内声场中低频段的模拟计算。
The acoustical wave equation is presented a serial spatial and time iterative equations and room acoustics field is simulated using finite difference time domain method.
分析了手征介质球壳的低频电磁屏蔽效应，给出了一组手征电磁屏蔽球壳的设计曲线。
The low frequency shielding characteristics of a chiral spherical shell is studied and a group of curves for design is given.
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