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However, by now it had grown to the size of a human head and was dark-red in color.

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Based on the theory study, a directional drilling guidance system is developed for practical require, its working flow as follows: before construction, design the best track practically, and save in the system. During drilling, the system measures well oblique angle and azimuth to watch well track. Drill driver compares designing well track with measuring track showing on display unit, controls joy stick experientially, adjusts drill direction, finally realizes directional drill.

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The contents of the car are dump ed into the receiving hopper, and then onto the small bell.

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Women were tuckedunder thin frayed bedspreads, waiting for the time when their jawswould drop suddenly in the night; where curious bland children withslit eyes and lips bubbling with saliva played with rag toys or a redwooden engine in a yard that was hidden from the outside world.

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In the core area of the node crossed by two diagrid columns, the node section area is far smaller than the sum of two columns' section areas.

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through making use of the reciprocal statistical fluctuation and the confirmed experimental data of the mass and charge of bose hadrons,to improve the research of the mass effect of the high order integral calculus connection of hadrons multiple number distribution.

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The main conclusions are those:(1) the cause of hot-dry climate before elevation of plateau is that the efficiency of atmospheric heat engine is lower than after the elevation owing to flatter global landform;(2) at the beginning of Oligocene Epoch,the horizontal scale of plateau reached the cr...

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