Because this coal bed thickness is moderate, selects the shield type hydraulic pressure support.
由于该煤层厚度适中，选用掩护式液压支架。
The standard plate of reservoir bed and net thickness had been set down.
制定了储层和有效厚度识别的标准图版。
The standard plate of reservoir bed and net thickness had been set down.
制定了储层和有效厚度识别的标准图版。
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