The importance of measuring technique was expounded, the developing trend of it was also analyzed. So that the quality and accuracy of mechanical working was raised greatly.
对测量技术重要性进行阐述，并对其未来发展趋势进行分析，使机械加工的质量和精度得以大幅度提高。
The quality assurance system serves the better function to enhancing accuracy of field acquisition data and eliminating various errors during working and reducing period seismic data processing.
质量保证体系对提高野外采集精度，减少施工中的各种误差，缩短资料处理周期有较好的作用。
It was found that the wear-resistant trough cast with EPC process was of high dimension accuracy, good surface quality, dense structure, and its working life could be increased by more than50%.
发现，采用消失模铸造耐磨槽铸件，尺寸精度高，表面质量好，组织致密，使用寿命可提高50%以上。
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