本论文研究成果有助于提高井下节流工艺技术水平。
The research achievement can help improve downhole throttling technology.
探讨硅溶胶型壳制壳工艺中几个主要问题，以求提高工艺技术水平和铸件质量。
Several important problems related to ceramic shell used silica sol as binder were studied in order to raise technical level of the shell making and improve quality of the castings.
展览会展示了最先进的国际纺织机械和非织造设备的工艺技术水平和发展趋势。
The process from yarn to fabric with a focus on the phases of weaving preparation and weaving is described.
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