等式约束条件 meaning in English

equality constraint

In the meanwhile , seeing that the parameters are restricted for many practical problems , the author also studies the problems of optimal conditional prediction in the model with respect to two classes of restriction of linear parameter equations . what is more , the optimal conditional linear and optimal conditional ^ - linear unbiased predictors are also obtained respectively , which extends the results given by the predecessors and enrich the theory of optimal prediction
考虑到对于实际问题，模型参数一般是要受到一定的约束，因此作者也研究了两类线性等式约束条件下的模型的最优预测问题，得到了模型的最优条件线性无偏预测和最优条件-线性无偏预测，从而成功地推广了前人的结果，丰富了这方面的预测理论