聘方须每月付给受聘方美元 500元整。

Party A shall pay Party B a monthly salary of US $500 (SAY FIVE HUNDRED US DOLLARS ONLY).

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乙方在产品购买数量达到50万个时，甲方应返还乙方的模具制作费柒仟元整(7,000)元。

Provided the purchase quantity of Party B shall reach 500 thousand, Party a shall return the mould production costs of Party B seven thousand Yuan sharp (7,000) Yuan.

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针对工业过程中普遍存在的时滞、非线性、对象参数时变等特性，提出了一种基于最优预测的神经元模糊自整定PID控制算法。

To the widely existed characteristics of time-delay, non-linear and timevarying of parameters in the industry process, an adaptive neuron-fuzzy PID controller based on optimal prediction is presented.

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