根据多年生产实践经验，论述了低压湿式螺旋储气罐挂圈漏点的封堵措施。
Based on production practice experience for many years, the stoppage measures of leak point in cup of low-pressure water-sealed spirally-guided gasholder are discussed.
经多年生产实践表明，改进后的采矿方法，其各项技术经济指标均得到显著效果。
Many years of practice showed that various technical and economic indexes had been remarkably perfected after improving the mining method.
手动密闭闸阀是我公司结合用户反馈信息和多年生产实践改进的新一代闸阀产品。
The valves are the newly improved products on the base of feedback of users and production practice of our company.
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