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The galvanometer is calibrated in percent of carbon dioxide.

The quantity of each element is expressed on a percentage basis.

Coke-oven byproducts, in percentage of the coal used, are gas 18.5, light oil 1.0, and tar 3.5.

This ratio is expressed as a percentage of the power output to the power input.

Русско-английский научно-технический словарь  

T: 0.082561344 M: 1 D: 1