其屏蔽盒应用主气隙，防止原电流产生的磁场集中在屏蔽壳的金属板内。

Its shielded box should be used the main air gap and prevent the primary current to produce the magnetic field concentrating in the shield shell metal plate.

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该方法弥补了以往各向同性球壳模型的不足，可计算出任意深度的原岩应力状态：铅垂应力、平均水平应力、水平面内最大及最小正应力。

By this method, it is capable for calculating the initial rock stress, i. e., vertical stress, average horizontal stress, maximum and minimum horizontal stress, in any depth below surface.

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REE在风化壳中富集分异受风化壳发育程度、花岗岩原岩中ree含量及其分布和分配的影响。

The extent of ree enrichment and differentiation is affected by ree concentrations and distributions in the primary granitoid rocks, weathering degree, etc.

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