Pure materials, or specific ratios of several pure materials, can then be used for any purpose that suits your needs.

Gasoline engines operate at a very specific ratio of fuel and air.

Plans are usually "scale drawings", meaning that the plans are drawn at a specific ratio relative to the actual size of the place or object.

On Jan. 1, California became the first state to mandate specific nurse-to-patient ratios.

However these only differ be a constant whose value is approximately "1" - the specific ratios are: 1.000..., 1.128, 1.225 respectively.

The length of the sides had to express a specific ratio.

Calcium and phosphorus are needed in a specific ratio of between 1:1 and 2:1.

Institutions are rated using a combination of specific financial ratios and examiner qualitative judgments.

Insert cards are randomly inserted into packs at a specific ratio.

The second is the introduction of other elements (dopants) into the crystal structure in very specific ratios.