Research purposes: By analyzing the effect on impact force between wheel and rail by track irregularity, technical evidences on limit of irregularity on rail welded joints are provided.
研究目的：为了研究轨道不平顺对轮轨作用力的影响，从而为钢轨焊接接头不平顺限值提供技术依据。
It is hard to track the blue whale, the ocean's largest creature, which has almost been killed off by commercial whaling and is now listed as an endangered species.
作为海洋中最大的生物，蓝鲸很难追踪，但由于商业捕鲸，它们几乎灭绝，现在已被列为濒危物种。
You can join them, by following Eckberg and his class as they track the adventures of Dan and Steve Buettner, two world-class bicyclists from U.S.A..
您可以跟随Eckberg和他的班级加入他们的行列，他们跟踪来自美国的两位世界级自行车手丹和史蒂夫·布特尼的冒险经历。
We track revenue, cost, and gross profit metrics against monthly, quarterly, and yearly targets and show them side by side with the carbon footprint data.
我们根据每月、每季度和每年的目标跟踪收入、成本和总利润，并将它们和碳轨迹数据一并显示。
Man overcame these faults by learning to track his targets at a close range.
人类通过学习近距离追踪目标，克服了这些缺点。
However, man overcame these faults by learning to track his targets at a close range.
然而，人类通过学习近距离追踪目标，克服了这些缺点。
In order to track temporal hours during the day, inventors created sundials, which indicate time by the length or direction of the sun's shadow.
为了在白天追踪时间，发明家发明了日晷，它通过太阳阴影的长度或方向来指示时间。
She won millions of dollars at blackjack by keeping track of the aces and face cards played.
通过跟进已打出的幺点和花牌，她在21点上赢了数百万美元。
In fact, Knight started the company by selling shoes from the back of his car at track meets.
事实上，奈特的公司是通过在田径比赛时在车后座卖鞋起家的。
In the late 1950s, Philip Knight was a middle-distance runner on the University of Oregon track team, coached by Bill Bowerman.
在20世纪50年代末，菲利普·奈特是俄勒冈大学田径队的一名中长跑运动员，他的教练是比尔·鲍尔曼。
One way we keep track of the radiation budget is by looking at the albedo of the different surfaces on the planet.
我们记录辐射收支的一种方法是观察地球上不同表面的反照率。
With more than $12 billion in sales this year, the industry is booming and, according to the market research company, Grand View Research, is on track to sell billions more by 2025.
该行业今年的销售额超过120亿美元，正在蓬勃发展。根据市场研究公司GrandViewResearch 的数据，到2025年，该行业的销售额有望再增加数十亿美元。
She told BuzzFeed News that her freshman chemistry class required her to use Connect, a system provided by McGraw Hill where students can submit homework, take exams and track their grades.
她告诉BuzzFeed新闻，她的大一化学课要求她使用麦格劳·希尔公司提供的Connect系统，学生可以在该系统中提交作业、参加考试并跟踪他们的成绩。
Men raced around a track in chariots pulled by horses.
人们坐在马车上绕着赛道比赛。
By sensing the weight of a vehicle, the company's smart roads can track the speed of each wheel.
通过感知车辆的重量，该公司的智能道路可以追踪每个车轮的速度。
By contrast, morals do not track differences in observation, and there also is no evidence for rational convergence as a result of moral conflicts.
相反，我们无法通过观察来跟踪道德差异，也没有证据表明道德冲突的结果会以理性的妥协作为终结。
This track is created by copying the files to this directory and appending a timestamp and success or failure indicator to them.
此跟踪是通过将文件复制到该目录并向文件追加时间戳和成功或失败指示符来创建的。
Test plan authors and test case designers can distribute their work for review and track the status by each reviewer.
测试规划人和测试用例设计者可以为复查分配它们的工作并追踪状态。
In these cases, information-system usability is directly influenced by a user's ability to track along a search trail.
在这些情况下，用户沿搜索线索跟踪的能力会直接影响到信息系统的可用性。
This team will help keep the project honest and on track by holding you or the portal project team accountable to defined policies and procedures.
此团队有助于保持项目的正确运行和跟踪，使您或门户项目团队负责定义策略和步骤。
The licensing is there for voluntary use by people who wish to track it, but stays out of your way.
任那些想要跟踪它的人自愿使用的许可是存在的，但却不适合您。
The two craft collided and the result was hundreds of pieces of shrapnel more than 10cm across, and thus large enough to track by radar—and goodness knows how many that were not.
结果是两星相撞，产生了无数大于10厘米的碎片，而且大到足以通过雷达来跟踪——只有老天才知道究竟有多少碎片。
The orders form contains several private fields that are only to be used by the shipping company to track orders.
订单表单包括几个私有字段，只供运输公司追踪订单时使用。
This information is routinely used by IBM Support to track down the source of the messages and problems reported in the runtime logs.
IBM支持人员经常使用此信息来跟踪运行时日志中报告的消息和问题的来源。
By default, databases only track when a document was last modified, but by selecting the Maintain LastAccessed property option, the database can also track when a document was last read.
默认情况下，数据库只跟踪最近修改文档的日期，但是通过选择MaintainLastAccessed property选项，数据库也可以跟踪最近读取文档的时间。
This information is mainly used by the DataStage to track the original source for the table definition.
此信息主要供datastage用于跟踪表定义的原始源。
Because I want to update database performance by request, I'll use a composite pattern to track statistics held by other statistics.
因为我想根据请求更新数据库的性能，所以我将采用compositepattern跟踪由其他统计值持有的统计值。
Emperor penguins, among the largest in the world, are hard to track during Antarctica's harsh winters - but now scientists can now track by satellite.
帝企鹅，是现存企鹅家族中体积最大的，在南极洲天气恶劣的冬季是很难发现其踪迹的，但是科学家门目前通过使用卫星影像来获得他们的踪迹。
Emperor penguins, among the largest in the world, are hard to track during Antarctica's harsh winters - but now scientists can now track by satellite.
帝企鹅，是现存企鹅家族中体积最大的，在南极洲天气恶劣的冬季是很难发现其踪迹的，但是科学家门目前通过使用卫星影像来获得他们的踪迹。
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