The void fraction in downward gas oil two phase flow in vertical tube is measured with the combined method of horizontal downward vertical tube for the two flow regimes(bubbly and slug flow).
采用水平—下降管组合法测量了垂直下降管内油气两相流动在泡状和弹状流下截面含气率的值。
The powerful extension of the leg downward and backward creates the horizontal movement forward.
腿向下和向后有力的伸展产生向前的水平运动。
Second, compared with men, the percent of women flowing upward in society is lower but that of horizontal and downward mobility is higher, and social standing of women tends to further decline.
其次，从女性的社会流动趋势来看，与男性相比，女性向上流动的比例较低，而水平流动和向下流动的比例较高，女性的社会地位有进一步下降的趋势。
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