求翻译：在2MHz交变电流激励下，测量的电磁波幅度衰减和相位差主要反映地层的电导率，受地层介电常数和围岩影响小，分析能力强[3]。是什么意思？

2MHz alternating current in the excitation, the measurement of electromagnetic wave attenuation and phase difference mainly reflects the formation of the electrical conductivity, dielectric constant and the surrounding rock strata affected by the small, strong analytical skills [3].

The change in 2MHz inspired, Current measurements of attenuation and 相位差 primarily reflected electromagnetic wave magnitude layer by layer, the dielectric constant and conductivity of small rock impact analysis capabilities, [ 3] .

Under the 2MHz alternating current drive, the survey electromagnetic wave scope weaken and the phase difference main reflection stratum conductivity, is small the stratum coefficient of dielectrical loss and the adjacent bed effect, analysis ability strong (3).

2MHz alternating current excitation, measurement of electromagnetic wave attenuation and phase difference reflects the formation conductivity, dielectric constant and surrounding rock formation little influence, analytical capacity better [3].

Under the circumstances that 2MHz alternating current is encouraged, the range of electromagnetic wave that measures decays and mainly reflects the conductivity of the stratum with the phase place badly, slightly influenced by stratum dielectric constant and country rock, the analytical capacity is