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Firstly, we describe the fundamental theory and types of the electrooptical modulators in detail, and make an introduction to the means used to analyze the modulators, especially, to the Schwartz-Christoffel conformal mapping technique.

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There was an increasing demand for engine power due to industrial development. As early as the 2nd century BC, the ancient Greeks invented an engine that was powered by the reaction from spurting steam; in 1690, the Frenchman Barben invented the first piston steam engine. On the basis of his predecessors' work and with his own hard work and numerous trials and failures, James Watt invented the steam engine with connecting rod, flywheel and centrifugal speed governor in 1782.In 1784, the British government granted a patent to James Watt for producing steam engines, which signified that man had entered the age of the steam engine and also significantly expedited the beginning of the Industrial Revolution in 18th century Europe. By the 1830s, steam engines had been widely used in various sectors such as textile, metallurgy, coal mining and transportation; for example, the American Robert Fulton invented the steamboat and the Englishman George Stephenson invented the steam locomotive.

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The installation of a Water Hammer Arrestors (Watts Series 05) or Water Pressure Regulator (Watts Series 1156 or 25AUB) may be required to correct the problem.

可能需要安裝一個水錘捕集器（美國瓦茨系列05）或水壓調(diào)節(jié)器（美國瓦茨系列1156或25AUB）來解決這個問題。

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And he shall break it as the breaking of the potters' veel that is broken in piece he shall not are: so that there shall not be found in the bursting of it a sherd to take fire from the hearth, or to take water withal out of the pit.

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"Whose collapse is like the smashing of a potter's jar, So ruthlessly shattered That a sherd will not be found among its pieces To take fire from a hearth Or to scoop water from a cistern."

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They regained their freedom in North Waziristan, in Pakistan.

而他們在巴基斯坦的瓦器里斯坦的北部重新獲得了自由AV野狼。