超微孔 meaning in English

ultramarine pore
ultramicropore

The discussion and practice of machining technique of non - fiber ultra micro - perforated membrane
无纤维超微孔薄膜加工技术探讨与实践
Hydrodyamical assessment of valve prosthesis made of expanded ultra - microporous teflon in vitro
超微孔膨体聚四氟乙烯人工心脏瓣膜体外流体力学的评价
Measurement of 27 ultramicroporous expanded polytetrafluoroethylene mitral valve under pulstile flow in vitro
超微孔膨体聚四氟乙烯人工二尖瓣体外脉动流性能检测
Ultra - minute work microporous felt membrane through o reuse facility f service water and 3 times sequence high grade treatment of waste & sewage water
超微孔精细过滤膜上的超微小孔能高效用于生活用水回用和污水三级处理工程。