下降了...

The flow regime in downcomer can be divided into two kinds: cross flow injection and impingement. Cross flow injection only takes place under low injection flow rate in dowcomer flow. The investigation on flow regime and heat transfer in RPV under PTS is for the first time in China.

在国内本实验是第一个研究下降环腔内的流动与传热，在国际上，象这样同时进行了流动可视化，常温常压下传热和高温高压下传热的实验也不多，特别是针对下降环腔内对流换热系数的研究，在公开文献中还没有相类似的实验。

Main dragger is transportation expenses -28.3% YoY , traveling -7.0% and wedding related expenses.

主要原因在于：交通类支出下降28.3%，城市居民家庭人均旅游支出同比下降7%，部分与结婚相关的消费支出也出现了减少。

The principal of buffer is described as follows.At impulsing down,the piston moves down and vacates the annular space.The pressure in respiratory cavity decreases to a certain level and the traveling valve opens.At that time,the liquids enter into traveling valve and cavity and the plunger is impulsed upward to carry out the gentle transient at the sudden change.When the upward impulsing begins,the respiratory cavity is subjected to pressure and the traveling valve closes.During the gradual pressure rising,the liquids in respiratory cavity effuse from the upper ventage and the sudden change of force-summing direction of plunger is relieved relying on the resistance of ventage.

其原理大致是：下冲程时，活塞向下运动，让出环形空间的体积，呼吸腔内压力下降，下降到一定水平后，游动阀打开，此时，游动阀和小孔同时进液，使柱塞在从上死点处突然改变方向向上运动时得到缓冲，实现了柔和过渡；当上冲程开始时，呼吸腔受压，游动阀关闭，在压力逐渐上升的过程中，呼吸腔内的液体从上部的小孔流出，并依靠小孔的阻力使柱塞受力突然换向得到缓冲。

The latest chemical product prices fell, demand has not really visible downstream, the short-term rise in oil prices in the channel, in which phase fluctuations, we continue to be optimistic about with anti-cyclical businesses and new materials, anti-cyclical embodies New Chemical Materials decrease in prices of raw materials is less than the decrease in prices of raw materials at the same time, the cost shift ability, to maintain price stability; civil explosive materials companies fell as a result, prices, countries can enjoy the benefits of; domestic urea production capacity excess of export disruption, high product costs, industry consolidation is inevitable, so concerned about the urea industry with technical advantages and cost advantages of urea enterprises: China Shandong Hengsheng; Although the overall situation of excess nitrogen, but because of the regional characteristics of the domestic fertilizer domestic part of the region will be in a high urea prices, the relevant listed companies will benefit from, such as the Liao Tung Chemical; compound assets as light industry, with the weak cyclical characteristics, the stability of industry profitability, industry leaders concerned about the compound: para Tian shares ; potash by the international market, short-term decline of domestic potash fertilizer prices would have difficulty, Salt Lake Potash in 2009 will be guaranteed a profit, Salt Lake Potash concern.

最新化工产品价格出现下跌，可见下游需求并未真正起来，短期石油价格处在上升通道，在这种上下波动阶段，我们继续看好具有抗周期性的新材料企业，抗周期性体现了化工新材料的产品价格下降幅度小于原料的下降幅度，在原料价格上涨同时，成本转嫁能力较强，价格维持稳定；民爆企业由于原料下跌，价格上涨，可以享受国家指导价的益处；由于国内尿素产能过剩，出口受阻，产品成本居高不下，行业整合在所难免，因而关注尿素行业内具有技术优势和成本优势的尿素企业：华鲁恒升；虽然氮肥全局过剩，但由于国内化肥的区域性特征，国内部分区域尿素价格将处于高位，相关上市公司将因此受益，如辽通化工；复混肥作为轻资产行业，具有弱周期性特点，行业盈利稳定，关注复混肥行业龙头：芭田股份；钾肥受制于国际市场，短期内国内钾肥价格恐难下跌，09年盐湖钾肥盈利将会有保证，关注盐湖钾肥。

Moreover, It's proved that if the initial point is the interior point of hypercube and steplength is confined to (0,1) when carrying out one dimension search following the direction mentioned above in order to generate next point, then any point generated by such iteration is interior point of feasible field.

在求解加辅助项模型的过程，作者找到一个很好的下降方向，并证明了只要初始点在超方体的内部选取，沿着上述的下降方向进行一维搜索时的步长限定在(0，1)范围内，那么迭代点始终保持在可行域内部。

With the worldwide spread of financial crisis, the stock market from the beginning of this round of sharp decline, has entered a phase of the worst free-falling.

从本回合开始急剧下降股市，进入了最严重的自由阶段下降。

However, the 1.1 per cent fall in retail sales in March with declines in almost every category raises fresh doubts.

然而，3月份零售额下降1.1%--几乎各领域的零售额都出现下降--引发了新的疑虑。

Lesion was made by current of 1mA, 210s in the dorsal funiculus at the 10th thoracic vertebral level. Behavioral and histological evaluation, HRP and fast blue retrograde labelling method were employed. The eletrolytic current caused bilateral corticospinal tract injury and incomplete paraplegia in hind limbs, and led to a substantial atrophy of corticospinal motoneurons , serving as a reproducible and practical model for research on SCI.

在大鼠T10胸椎节段脊髓后索插入损毁电极，通电1mA，210s，应用行为学评分、脊髓局部组织学检查、HRP和荧光逆行示踪方法发现，电解损伤造成了双侧皮质脊髓束纤维受损，大鼠双侧后肢肌力下降、肌张力升高、运动功能下降，同时大脑运动皮层处皮质脊髓束胞体发生明显逆行性萎缩，可作为一个稳定、可靠的SCI模型。

Water retention value of the bleached wheat pulp decreased The fiber of refined pulp have a more amorphous area, refined pulp contains more fines, more hydrogenous fibrils, colloidal cellulosic material can be produced on the surface of fibers.

纤维素酶酶解的是一些比表面积较大，亲水性较强的胶体性纤维，这些物质的去除也使纸浆的保水值下降。同时，酶攻击了纤维的薄弱处，使纸浆的聚合度稍有下降。

The ocean surface's average pH is currently estimated to be around 8.1, and to have dropped from about 8.2 since around 1800, before the industrial revolution took off, says Zeebe. A reduction of 0.1 units does not sound like much, but pH units are on a logarithmic scale, so a drop of one unit corresponds to a tenfold increase in acidity.

齐伯说：据估计，目前海洋表面的平均 pH 值大约下降到了8.1，在工业革命开始之前的1800年前后， pH 值为8.2.0.1的下降幅度听起来并不大，但是 pH 值单位利用的是对数标度，所以降低一个单位对应着酸度上升10倍。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。