约束坐标 meaning in English

constrained coordinates

To reduce the weight and cost of finishing mill to the minimum , optimum design computes the important parameters with constrained cyclic coordinate method , and precision is improved further . database is used to maintain data user puts into and infer
而辊系优化推理部分以降低精轧机重量和减少造价为目的，采用约束坐标轮换法对辊系和机架参数进行优化推理，进一步提高设计精度。