输入日期键入单品号检查是否在价格维护期间进货。
Input date agree with item code back-check whether in price stick up for among stock.
维护产品、竞争者价格以及市场开发的相关知识。
Maintain knowledge of the product, competitor price and market development.
大型港口起重机往往价格昂贵，成本高且维护费用大。
A larger harbor crane is often costly and maintenance charge is larger.
轮椅磨损和本身的价格以及维护费用。
Wheel chairs wear out and are expensive and require maintenance.
一台机器的好坏不但要看它的价格、厂家，更要注意的是要在买后的保养与维护。
The stand or fall of a machine to see not only the price of it, we should pay attention to in the factory, the more in the maintenance and maintenance after buy.
结构简单，维护方便，工作可靠，工作噪音低，耗电小，价格低，耐用适用。
Simple structure, easy maintenance, reliability, low noise, small power consumption, low cost, durable apply.
但它有换向器，结构复杂，价格昂贵，维护困难，不适于恶劣环境。
But it has commutator, complex, expensive, difficult to maintain, not suitable for harsh environments.
但它有换向器，结构复杂，价格昂贵，维护困难，不适于恶劣环境。
But it has commutator, complex, expensive, difficult to maintain, not suitable for harsh environments.
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