A universal method of bit selection was presented in consideration of the rock mechanics properties of formation and economic benefits of the bit.

提出了一种既考虑地层的多种岩石力学特性又考虑钻头经济效益的具有通用性的钻头选型方法。

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Green high performance concrete has not only good endurance, workability, mechanics and economic reasonability, but also characteristics of energy saving and environment protection.

绿色高性能砼有仅具有良好的耐久性、工作性、力学性能及经济合理性，还具有节能、环保等特点。

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D1 Reactor design uses information, knowledge, and experience from a variety of areas thermodynamics, chemical kinetics, fluid mechanics, heat transfer, mass transfer, and economic.

反应器的设计使用了各个领域的信息，知识和经验，比如热力学，化学动力学，流体力学，传热，传质，和经济学。

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The deficit, in other words, is a problem but the mechanics of the economic system is another.

FORBES: Why Facebook Town Hall Shows Obama is Missing the Point on Innovation

The Like-Minded Mechanics of the Economic Machine by Bill Bonner originally appeared in the Daily Reckoning.

FORBES: Fed Has Your Currency And Wants Your Mind

The discovery of quantum mechanics and Einstein's theory of relativity, vital to much of modern technology and economic activity, including the transistor, the laser and the atomic bomb.

ECONOMIST: Letters