求翻译：油料公司：油价占成本的13%，油料供应商较多，航空公司的选择余地较大。飞机制造公司：公司的所有飞机都是波音737，这样可以实施较大批量的采购，增强了采购过程中讨价还价的能力，可用较高的折扣率采购到所需要的飞机。机上供应品制造商：业务量较大的航空公司在与机上供应品厂商的交往中，占据主动地位，因为厂商较多，自己又是大主顾。是什么意思？

Oil companies: oil prices accounted for 13% of the cost of fuel suppliers more choice of airlines. Aircraft manufacturing company: the company's aircraft are Boeing 737, can be implemented so that larger bulk purchasing, enhanced bargaining power in the procurement process, procurement of the aircra

Oil prices, oil companies accounted for 13 per cent of the cost, fuel suppliers, airlines are more of the options for larger. Aircraft Manufacturing Company: all of the Company's aircraft are Boeing 737, so that you can have a large number of the purchase to enhance the procurement process in bargai

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Oil companies: oil prices 13% per cent of the cost, fuel suppliers more, greater choice of airlines. Aircraft manufacturing company: all the company's planes are Boeing 737, so you can implement larger bulk procurement, enhanced bargaining capacity in the procurement process, high discount rates ava

Fuel oils company: The oil price accounts for the cost 13%, the fuel oils supplier are many, airline's choice leeway is big.Airplane manufacture company: Company's all airplanes all are Boeing 737,%2