与供应商签订框架合同；
摘要：框架合同在建筑业得到越来越多的应用，但现有法规缺少对框架合同性质和功能的定义，缺乏相应的理论依据。
Abstract: framework contract has been widespread applied in the economic transaction, but there is no definition of character and function of framework contract, and less of theoretical basis.
合同框架下的其他任务包括，改善电力马达效率、在机翼上集成太阳能电池并探索氢存储技术。
Other tasks under the contract include improvement of electric motor efficiency, integration of solar cells into aircraft wings, and the exploration of hydrogen storage technologies.
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