以下为句子列表：
英文: After the transformation, the wall temperatureof the sampling tubes was obviously descended, their radiating performance improved, andthe measuring accuracy of the water gauge ensured.
中文: 改造后，水位计正负压取样管管壁温明显下降，正负取样管的散热性能改善了，仪表测量的准确性得到了保证。
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英文: The setting up of water gauge used to observe water level had been and became prevalent, with technical great improvement during the Song Dynasty.
中文: 摘要我国宋代时期普遍设置用以观测水位的水尺，技术水平较前大为提高。
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英文: AN INVESTIGATION INTO THE DESIGN OF HEAVY-LIQUID WATER GAUGE FOR MARINE BOILERS
中文: 船用锅炉重液式水面计装置的设计方案探讨
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