抽取的

The primitive group chooses 2000 patient when my hospital MR scanner artifacts appear quite frequent,the improvement group chooses 2000 patient after through engineer and technician multi-analysis question,adopts suitably suppresses the artifacts method.

为提高图像质量，我们对二组患者各2000例进行分析，探讨伪影产生的原因及有效的消除措施。1材料与方法原始组为我院MR扫描仪伪影比较频繁的半年时间随机抽取的患者2000例，其中头723例、颈438例

Experimental mice were exposed to Trypanosome evansi after injection by different doses of antigenic reservoir. The results showed that 20 μg dose produced 83% and 67% protection to 2 sample variations after 4 immunizations. However, 3 immunizing doses could not give good protection. No protective effects were detected when experimental animals immunized by single VSG exposed to isotype from different rabbits.

用不同剂量抗原库免疫小鼠后进行攻虫，结果显示：经四次免疫后，20μg 剂量对随机抽取的两个变异体100 条虫体的保护率分别达到 83%和 67%；改变免疫方法，经三次免疫后的保护效果不理想；用单一 VSG 抗原免疫小鼠，接种来自不同兔体的同型虫体，不能起到相应保护作用。

Cronbach a of them equals respectively 1.000, 0.714. Conclusions The system could form the test pater with the strategy of the combination of the certain proportion of the important degree and the binominal distribution models which realized the Internet testing, rectifying and analysis.The test papers abstracted from the system were reliable and valid. It can scientificly, objectively evaluate the students' ability and it's beneficial to deviation of the teaching, testing and controlling testing cheat. The Non-paper testing system has good practical value.

建立的试题库和考试系统能够按重点等级定额比例分配与难度等级二项分布模型策略组卷，实现了远程考试、自动阅卷和相关分析功能；从该系统抽取的试题难度和区分度合适，试卷可信、有效；能够客观、公正、科学地测试和评价学生的能力，对开展教考分离、控制考试作弊起到积极作用，具有较好的实用价值。

In the thinning of the target image, an edge detection method based on four structure elements template and a morphological sequential homotypic skeleton a...

该算法采用并行的处理方式，在提高图像处理质量的同时，提高了骨架抽取的速度；对于细化后的骨架，采用了动态变步长保精度跟踪矢量化方法。

And as with oil, supplies of water-at least, the clean, easily accessible sort-are coming under enormous strain because of the growing global population and an emerging middle-class in Asia that hankers for the water-intensive life enjoyed by people in the West.

和石油相似，由於全球人口增长和向往和西方人一样享受奢华水生活的亚洲中产阶级的日渐涌现，水资源的供应正面临巨大压力──至少是清洁，容易抽取的水资源情况是如此。

And as with oil, supplies of water-at least, the clean, easily accessible sort-are coming under enormous strain because of the growing global population and an emerging middle-class in Asia that hankers for the water-intensive life enjoyed by people in the West.

和石油相似，由于全球人口增长和向往和西方人一样享受奢华水生活的亚洲中产阶级的日渐涌现，水资源的供应正面临巨大压力──至少是清洁，容易抽取的水资源情况是如此。

Based on survey results of four waste landfill sites in Beijing which taken at random some problems in waste landfill sites were noticed including waste overfilling low ratio of collection and utilization of landfill gas .

通过对北京市随机抽取的4个垃圾填埋场的调查分析，发现各垃圾填埋场存在超量填埋，填埋气体的收集与利用率低等问题，提出了垃圾填埋处理发展的新思路。

Based on survey results of four waste landfill site s in Beijing which taken at random,some problems in waste landfill site s were noticed including waste overfilling,low ratio of collection and utilization of landfill gas.

通过对北京市随机抽取的4个垃圾填埋场的调查分析，发现各垃圾填埋场存在超量填埋，填埋气体的收集与利用率低等问题，提出了垃圾填埋处理发展的新思路。

Here, we are like a family that consistently overspends its

但目前积重难返的经常帐赤字将改写整个游戏规则，随着时间过去，债主将一一上门，将我们收入瓜分殆尽，其结果是世界上其它人从我们身上抽取的税捐一天比一天高，而我们就像是一个入不敷出的家庭，而且慢慢会发现，辛苦的工作所得，将被债主吸得一乾二净。

Here, we are like a family that consistently overspends its income.

但目前积重难返的经常帐赤字将改写整个游戏规则，随着时间过去，债主将一一上门，将我们收入瓜分殆尽，其结果是世界上其它人从我们身上抽取的税捐一天比一天高，而我们就像是一个入不敷出的家庭，而且慢慢会发现，辛苦的工作所得，将被债主吸得一乾二净。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。