首先，在价格有波动时，建立了商品动态价格（与时间和销售量都有关）的数学模型，并给出动态价格最优的条件；
At first, a mathematical model of dynamical price depending on time and selling quantity is established for the commodity as the price waves, a condition is given for the optimal price.
价格形成均衡的边界条件与散户心理特征有关。
The equilibrium boundary condition for forming the stock price was concerned with the characteristic of the small traders.
我们非常希望获得贵公司的最新产品目录和有关出口价格、付款条件以及样品的详细材料。
We should like to receive a copy of your latest catalogue and full details of your export prices and terms of payment, together with samples.
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