At the initial stage of development, the main oil production methods give priority to hydraulic piston pump and closed hot water circulation.

开发初期，主导开采方式主要以“水力活塞泵、闭式热水循环”等采油工艺为主。

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For the convenience of policy decision in the initial stage of development, the method of determining the FWG3 decline development model is proposed.

提出了开发初期FWG3递减开发模型的确定方法，便于开发初期决策。

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She added: "These interesting initial results show promise for the development of a breath test to detect head-and-neck cancers which are often diagnosed at an advanced stage.

她补充说：“头颈部癌症经常到了晚期才被诊断出来，这些有趣的初期结果给开发一种头颈部癌症的呼吸检测法带来了希望。

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Mercedes Marquez, assistant secretary at the Department of Housing and Urban Development, told CNNMoney that the initial stage of the program has been difficult, in part, because the cities and communities involved in the program have never done this work before.

CNN: Patience needed for housing loan program, home buyer finds