Despite this, there is still reluctance among spine surgeons to perform multilevel fusions for adult degenerative disc disease.

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There is no set formula for this which covers all time periods, as acceptable powder charge densities, the burn rate of powders, the chemical composition of powders, the amount of the charge's energy wasted as smoke, and other factors change as improvements are made over the years.

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Fixed Rate: Here, the interest rate on the base amount is fixed through out the years of the payment of the loan.

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During the experiment, we choose Toyota Corona 1600cc as a test car and measure its maximal acceleration value by means of palm vibration noise analyzer, on conditions of the same tire pressure, speed, load, and road section and measure fuel consumption in a fixed speed and mileage. In addition, by using tire pressure gauge and infrared thermometer, measure after-driving tire pressure and tire temperature to make a comparative analysis. Finally, we use 185/60 R-14 Goodyear tire to measure tire sinkage in an empty car and a loaded car and obtain tire compression ratio to explain the difference of riding comfort and economical consideration of fuel consumption between nitrogen-filled tires and compressed air tires.

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The experiment shows that:(1) In certain light intensity and electric field ranges (145～305V/cm) the material Si∶ with a resistivity of 1E4Ω·cm exhibits a current oscillation phenomenon at liquid nitrogen temperature;(2) At a certain electric field,the waveform of the current oscillation is stable and does not change with time;(3) The dependence relation between the oscillation frequency and light-intensity can be expressed by f=f0(L/L0)α where L0 is the minimum light-intensity needed to stimulate oscillation,f0 is the frequency under L0,L is the intensity of the light,and α is a coefficient that increase with electric field;(4) The modulating coefficient K K=(Imax-Imin/Imax decreases as the light increases;(5) The maximum value of the oscillation Imax decreases with the increase of the light-intensity while the minimum value of oscillation Imin increases slowly.

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The giant cell tumor of spine has its own specific radiographic feature. There is some recurrence in simple curettage of tumor lesion. The thoroughly en bloc resection of tumor or spondylectomy, bone fusion and strong inter fixation are the key points for successful surgical treatment, the clinic behavior of bone giant cell tumor is somewhat unpredictable.

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The pipelined CORDIC architecture is very suitable for FFT butterfly operation because of its high throughput and regularity, but it will consume lots of resources,this article presents an improved architecture of CORDIC pipeline,starting with the property that the FFT rotary factor is fixed but not arbitrary,and according to the mapping between the basic rotational angle of CORDIC and scale factor and the rule for transform among the scale factors.On the condition that the velocity of FFT butterfly operati...

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The salient advantages of the proposed braking system are (1) its robustness,(2) its excellent ability to response the wheel slip, and (3) its high time-efficiency for decelerations.

同時(shí)riav视频，本文基于滑模變結(jié)構(gòu)和計(jì)算智能相融合的控制技術(shù)韩国无码视频免费观看，還分別設(shè)計(jì)了基于固定滑移率控制的ABS、TC系統(tǒng)2021国内自拍偷拍。

In fixing the interest rate market interest rate is taken as the reference rate, rather than the moneylenders' rate.

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