Aiming at the deep hole detection, the method of ring light section is introduced and its principle is analyzed.

针对深孔内膛的检测，对环形光切的测量方法进行了介绍，对其测量原理进行了分析。

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An image detection method based on the ring light section method was developed to measure deep holes with complex surfaces, especially rifled gun barrels.

针对膛线炮身管提出了一种基于环形光切的图像检测方法。

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The crystallization wheel (1) and the steel belt (6) are both provided with circulating water cooling devices, so that the high-speed casting of light section blank can be realized.

结晶轮(1)及钢带(6)都有循环水冷装置，故可实现小断面坯料的高速浇铸。

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In light of section 114 of the Continuing Appropriations Resolution, 2013 (Public Law 112-175), I am hereby instructing the heads of executive departments and agencies that they should continue to adhere to this policy through March 27, 2013, the date after which statutory pay adjustments may be made pursuant to section 114 of Public Law 112-175.

WHITEHOUSE: The White House

Scientists have known for some time that nanowires can trap more light, and using certain materials, such as gallium arsenide, can make use of a certain section of the light spectrum that significantly increases energy production.

FORBES: A Swedish Solar Startup's Nanowires Promise To Deliver A Big Energy Boost

Do we really believe none of this will resurface if oil companies are given the green light to drill in our section of the Arctic continental shelf?

CENTERFORSECURITYPOLICY: LOST oil prophets