Continuously increasing the liquid withdrawal rate of a well is one of the main techniques used to enhance the oilfield production.

不断提高生产井的采液量是已开发油田稳产的主要措施之一。

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The main techniques are forward lunge, horse stance, empty step, rest-stand step, crouching step, pushing palm, twisting hand, and pat the feet.

弓步、马步、虚步、歇步、仆步、推掌、缠手、拍脚。

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This paper studies the main techniques of measuring non-sampling error and classifies them into two classes: based on designs and based on models.

本文研究了国内外非抽样误差测度的主要方法，将其分为两类：基于设计的方法和基于模型的方法。

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Two main techniques have been shown to work in the laboratory, by using a donor embryo or a donor egg.

BBC: 'Three people, one baby' public consultation begins

Researchers use two main techniques to assess artery plaque using imaging.

FORBES: Magazine Article

There are two main techniques for doing this.

ECONOMIST: Race, sex and the dismal science | The