Economic, ecology and society benefits of improves technology and measurement were prominent approved by experiment and study, and it had significance of directing practical production.

经实验研究，各改造技术措施的经济效益、生态效益和社会效益效果明显，有指导生产的实际意义。

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It was proved in practical measurement experiments that the principle of measuring gear integrated error with a small pressure Angle measurement worm was correct and the technology was possible.

经过实际测量实验，证明了小齿形角工具蜗杆测量齿轮整体误差原理上的正确性，技术上的可行性，展示出此项新技术的潜在优势及应用前景。

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The training includes practical surveying sessions by divers using traditional measurement-taking and drawings of the ship and also more specialized techniques using advanced technology.

UNESCO: MEDIA SERVICES