A least-squares mixed finite element methods for the first-order system formulation of second-order elliptic problems and a formulation for the infinite boundary conditions are presented.

研究了无穷边界的二阶椭圆问题，探讨了将其转化为一阶系统的最小二乘有限元逼近方法。

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This means sitting on top of the creation of user passwords and the formulation of rules and procedures for such fundamental functionality as general access to the system assets.

这意味着他们控制用户密码的创建，以及为对系统资产的一般访问等基本功能制定规则和过程。

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The setting-up of the urgent rescue system is later than the formulation of the urgent rescue prediction scheme of the accident

应急救援体系的建立滞后于事故应急救援预案的制订；

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The other area that the purely technical PM may be challenged is the formulation of an eco-system, where a consumer product is the foundation for revenues from other apps, like downloadable games, or advertising.

FORBES: The Product Manager as the Digital Industry's Rock Star

This is usually said to be, a rule of thumb, about 20% of the sum collected or, in another formulation, perhaps 35% of the marginal revenue of the system.

FORBES: US Incomes Are Rising But It's All Going on Health Care

Technical tinkering, such as changing the formulation of a drug from a fast-acting pill to a slow-release system, is a common tactic.

ECONOMIST: Prescription drugs