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The receptance characteristics of track system has been predicted with the three dimensional track for high frequency vibration, with this model, the structure parameters of track system affect onreceptance have been discussed. The results show that the stiffness of ballast, sleeper mass, and stiffness of railpad are the main factors affecting on resonance and antiresonance under second resonance frequency.

利用轨道系统高频振动模型预测了各种参数对轨道系统导纳特性的影响，结果表明：道床刚度、轨枕质量和轨枕垫刚度是影响轨道系统第二阶共振频率以下共振和反共振的主要因素，随道床刚度增加，或轨枕质量减小，或轨枕垫刚度增加，第一、二阶共振和第一阶反共振频率增加，道床阻尼、轨枕垫阻尼主要影响第一、二阶共振和第一阶反共振振幅，阻尼越大，共振峰值和反共振谷值越平缓。

After Cold War, the status of Foreign Aid declined in the U.S national stratagem and its fund has been decreased to a level of less than a third of that in peak. After 9.11 Events, the global stratagem of the U.S changed in a large degree and transferred its core to Antiterrorism and anti-diffusion of weapons of mass destruction. At that time, the U.S drew its attention back to the Foreign Aid, such as Political Aid, Military Aid and Economic Aid, and took it as a powerful tool in global antiterrorist stratagem.

冷战结束后，对外援助在美国国家战略中的地位有所下降，美国对外援助的拨款一度降到不到其高峰期的三分之一的水平。9.11恐怖袭击后，美国全球战略发生重大转变，反恐和防止大规范杀伤性武器的扩散以保障其国家安全成为美国的核心战略，美国在全球展开了声势浩大的反恐战争，这时候，小布什政府开始重新重视对外援助，把对外援助当作其全球防恐战略的一个有力工具，政治、军事援助和基于政治、军事目的的经济援助在小布什么政府里又开始大行其道。

Honeybee colony collapse disorder is characterized by the mass loss of honeybee workers. Only the queen, her brood, a small number of newly emerged workers and the food stores are left behind in the hive, with only a few dead bees in the affected hive or apiary.

蜂群衰竭失调症（colony collapse disorder，简称CCD）的特徵是造成西洋蜂羣之外勤工蜂大的消失，巢内只残蜂王、、刚化之工蜂和一些储存的食物，且在蜂巢内及养蜂场附近未有大死亡之尸体。

A capillary electrophoresis-mass spectrometry analytical method for apomorphine and sildenafil in medicines for Erectile Dysfunction was developed.

建立了毛细管电泳－电喷雾电离质谱联用法同时测定性保健品中脱水吗啡和西地那非的分析方法。

A high performance liquid chromatography-mass spectrometry analytical method for illicit drugs,apomorphine,sildenafil and alprostadil,in medicines for erectile dysfunction has been developed.

建立了高效液相色谱-电喷雾电离质谱法同时测定性保健品中违禁药物脱水吗啡、西地那非和前列地尔的分析方法。

Results The average age of the patients in the 18 cases was 36 years old, the main complaint was tenderness mass located at the ankle and foot ; the lesions were originated in tendon sheaths and aponeurosis and their sizes were between 2～10 cm.

结果 18例患者平均年龄36岁，13例病变位于踝和足部，疼痛性包块是其主要症状，大小为2～10 cm，起源于腱鞘或者筋膜。

The Great Central Plain中部大平原:The land mass between the Rocky Mountains and the Appalachians.

指的是洛基山和阿巴拉伊亚山之间的平原。大平原：指的是中部平原以西的部分。

The Great Central Plain 中部大平原: The land mass between theRocky Mountains and the Appalachians.

指的是洛基山和阿巴拉伊亚山之间的平原。

The Great Central Plain中部大平原:The earth mass in with the Rocky Mountains and the Appalachians.

指的是洛基山和阿巴拉伊亚山之间的平原。

In earlier times this lateral instability was not apparent because the weight and the mass of the materialsand the limited height of the structures negated the importance of horizontal forces

在早些时候，这种侧力带来的不稳定性不是很明显，那是因为这些建筑材料的重量和庞大体积，以及建筑结构有限的高度使人们忽视了这些巨大破坏力的重要影响。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。