求翻译：“一般说来，这三个主要的矿化层(P1、P2和P3）在岩体中被脉石层分隔，这些脉石层不含磁铁矿或所含磁铁矿的量非常低。 通常，磁铁矿呈层理发育良好的矿层，上部和下部与围岩突变接触，但是，也有部分磁铁矿呈浸染状充填于围岩裂隙中。是什么意思？

"Generally speaking, the three main mineralized layer (p1, p2 and p3) in the rock vein stone layer separated, and gangue layer does not contain magnetite or magnetite contained in volume is very low. Typically, the magnetite was well-developed bedding seam, the upper and lower and wall rock abrupt c

"As a general rule, the three major mineralized layer (P P 1, 2 and 3) P rock in the rock layers separated by pulse, the pulse rock does not contain the magnetic iron ore or the included magnetic iron ore of the volume is very low. Typically, the magnetic iron ore is the development layer ferruginou

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"Generally speaking, the three main mineralized layers (P1, P2 and P3) was gangue rock layers separate, these gangue layer does not contain magnetite ore or magnetite content is very low. Typically, bedding of well-developed deposits of magnetite, upper and lower contacts with the mutations of the s

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