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In addition, the test results of frictional pressure drop in smooth tube with water and kerosene are compared with the calculated results with homogeneous model and Friedel formula respectively. By comparison, more suitable calculation formula are recommended for smooth tube.

此外分别研究了两种工质在光管中的两相摩擦阻力特性，将实验结果分别同以均相模型和Friedel经验公式的计算值进行了比较，推荐了适合于光管中摩擦阻力计算的经验公式。

The narrow diameter of capillaries results in high resistance to blood flow, and leads a significant drop in blood

微血管那个细的直径对血液流动产生了很高的抵抗，使其内的血压下跌

And as temperatures heat up throughout the Northern Hemisphere, oil prices are cooling off dramatically. Crude prices saw their most precipitous drop in two years on Jan. 4, with the February contract for the benchmark West Texas Intermediate grade tumbling to $55.59 in New York Mercantile Exchange trading.

当北半球的温度处处暖和，油价确戏剧性地冷却下来。1月4日原油价格见识了其两年来最陡峭的跌幅，从二月份开始承办的现行基准的*美国西德州中级原油变为*美国商业交易所暴跌到$55.59元。

Border Patrol agent Mark Qualia says the increase in arrests and incarcerations has led to a significant drop in illegal border crossings.

卡里亚表示，非法入境者遭逮捕及监禁案例增加，已使得非法跨越美墨国界的比例大幅下降。

The price increases of recent months have stemmed from a marked drop in stockpiles of oil, particularly in America.

价格上涨的近几个月来，来自于明显降低了库存的石油，尤其是在美国。

The price increases of recent months have stemmed from a marked drop in stockpiles of oil, particularly in America.

最 近油价的上涨主要是因为石油储备的下降，尤其是在美国。

First, the global economic slowdown and the subsequent drop in consumer spending stymied demand for discretionary goods made in China.

首先， 由于全球经济下滑，以及由此引起的消费性需求的下降，影响到了中国生产的主观消费品。

A visual analysis of samples revealed that homogenised cultures appeared to be homogeneous in nature, however, a viability study showed that there was a 91% and a 100% drop in the number of viable c.f.u. after homogenisation for 5 s and 45 s, respectively.

视觉样品分析显示homogenised文化似乎是同质性的，但是，可行性研究表明，有91 ％和100 ％的降幅在有多少可行的CFU单一化后，为第5 和45 s ，分别。

Dais Shern, president of Mental Health America, said that the current black box warning for children and adolescents has resulted in a 20% drop in antidepressant prescriptions for those age groups.

证据华盛顿邮报报道，Dais Shern是精神卫生方面的专家，他说目前针对黑盒警告已经使这个年龄段的抗抑郁药的处方量比老年组下降20%。

In fact, even though no one would like to drop in this small column, I will still try to come here every day to update this post for my own sake.

中文里也有许多和腿这个字有关的俗语，像拉后腿、飞毛腿等。我们今天要讲的第一个习惯用语是：To shake a leg。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。