Introducing method of measuring the points on the pressure vessel, establishing and transforming coordinate systems, estimating accuracy of manufacture with design standard.

介绍压力容器上实体元素的测量，测量坐标系的建立与转换，以设计基准评定制造精度。

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In order to increase the accuracy in measuring transient pressure by a pressure transducer, it is necessary to improve its frequency response property.

为了提高瞬态压力测量的精度，必须设法提高传感器的频响特性。

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Constant orifice differential pressure is the premise for high accuracy hydraulic measuring, so thorough analyse of orifice differential pressure control technology has been taken.

阀口压差的稳定是高精度液动测量的保证，因此深入研究了阀口压差控制技术。

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