Based on the diffraction integral theory, the quasi-focused characteristics of a laser beam with waviness modulation have been studied theoretically and numerically in the paper.

采用光波的衍射积分理论，对具有波纹调制激光束的准聚焦特性进行了理论分析。

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Colorimeter based on optical integral theory has the advantages of simple structure, fast measuring speed, lower price and so on, so it is broadly applied in the quality control process.

采用光学积分原理设计的光电色度仪器，由于其结构简单、测量速度快、成本低等优点已被广泛地应用在产品的色度检验控制过程中。

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As the fracture assessment method based on COD theory is replaced by the method based on J-integral theory, it is greatly required simple and convenient, reliable evaluation method of J-integral.

随着以COD理论为基础的断裂评定方法被以弹塑性J积分理论为基础的断裂评定方法所取代，在工程实际应用中迫切需要简便、可靠的J积分估算方法。

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The God particle is an integral solution to explaining a theory of everything, and thus serves a useful purpose.

FORBES: Wall Street Discovers The God Particle

Street stops increased substantially in New York in the mid-1990s, when, faced with overwhelming crime, then-Mayor Rudy Giuliani made stop and frisk an integral part of the city's law enforcement, relying on the "broken windows" theory that targeting low-level offenses helps prevent bigger ones.

WSJ: Trial over NYPD stop-and-frisk tactic set to begin