It is indicated that the precise flat Plate, hollow column and clock gauge should be selected properly to satisfy actual requirements for measuring accuracy of oil well pump liners.

指出在实际生产中应根据需要选择合适精度的精密平板、空心立柱和千分表来装配，以满足抽油泵衬套测量精度要求。

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Force - measuring elements employ either a cantilever beam or a column arrangement.

测力元件采用悬臂梁或柱的形式。

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An electro - pneumatic electron column measuring instrument is a new type of measuring instrument combining pneumatic principle with electron magnification technique.

气电转换式电子柱量仪是将气动测量原理与电子放大显示技术融为一体的新型量仪。

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It is a collaborative partnership of more than 30 nations from all continents, all working together to provide a seamless global array of over 3, 000 profiling floats moving up and down in the water column from the sea surface to 2, 000 meters and measuring temperature, salinity, and depth during every ascent to the sea surface.

UNESCO: Building the Wealth of Nations