The solution is filtered and prmped through the fine holes of a spinneret. 纺丝液经过滤后,借助于泵的压力穿过喷丝头的细孔。
It is the primary sedimentary characteristics of sandstone and the fine porethroat distribution preponderant through diagenesis modification that caused low permeabili-ty. 砂岩原始沉积特征和成岩作用改造后细孔喉分布优势是导致低渗透的原因。