Proportional method and bisectional method were introduced to optimize the dosage of every surfactant.

用比例法与对分法优化各表面活性剂用量；

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When introducing the proportional method of bidirectional compositor brought forward by the Japanese scholars, our country's scholars never explain the precondition for using the method.

国内学者在介绍日本学者提出的双向排序均衡法时，从来都没有注明使用这种方法的前提条件。

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Part six: the method and channel of drawing into the proportional principle.

第六部分：引入比例原则的方式与途径。

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Councillors in Scotland are usually elected to multi-member wards under proportional representation using the "single transferable vote" method.

BBC: Labour wins South Lanarkshire Council majority

Just to add complication, each will have a different electoral system: council elections in May will be by the traditional first-past-the-post method, European elections in June by a proportional system.

ECONOMIST: Devolution