approximate
Approximation or approximation refers to a thing that is similar to another, but not exactly the same. Approximation can be used in many properties (quantity, numerical, image or description), is almost the same, but not exactly the same situation. Approx most commonly used in numbers, also commonly used in mathematical functions, shape and physical laws. In science, a physical phenomenon is transformed into a model with a similar structure. When the exact model is difficult to apply, it will be approximated by a simpler model, simplifying the calculation of the middle, such as using the bat model to approximate the actual chemistry The distribution of atoms in the molecule. When the information is not complete, can not accurately state a specific thing, you can also use an approximate way to deal with. The approximate type will depend on the information available, the degree of accuracy required, and the time and effort that can be saved using approximate ones. ...