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objective to determine the menarche age among female students and the relation between body fat and menarche in anhui province to provide theoretical basis for adopting intervention measure and carrying out health education.methods probability unit regression were used to calculate mmas in 3 000 girls aged 9~18 years old,who were selected from 3 areas in 2005.results mmas were 12.76 and 13.11 years old for urban and rural girls respectively.the youngest age was 10.the menarche age was significantly,related with bmi sebum thickness of abdomen,sebum thickness of shoulder blade and the upper arm.conclusion there was significant relationship between menarche age and body fat.menarche age showed an ahead trend in han national students in anhui province.sex eduction should be conducted in advance,and it was important to strengthen sex education in adolescent.

目的 了解安徽省女生月经初潮及初潮前后体脂变化情况,为采取干预措施和健康教育提供理论依据。方法按照2005年全国学生体质调研要求,采用分层整群抽样方法,对安徽省南、中、北3个地区城乡9~18岁中小学女生3000人进行调查,并测量体质指数、腹部皮脂厚度、上臂皮脂厚度和肩胛下皮脂厚度4项指标。结果城市女生半数月经初潮平均年龄为12.76岁,农村女生13.11岁,城乡最小月经初潮年龄均为10岁。体质指数、腹部皮脂厚度、上臂皮脂厚度和肩胛下皮脂厚度4项指标均值来潮组均大于未来潮组,差异有统计学意义,p.01。结论月经初潮年龄与体脂因素关系密切;安徽省汉族学生月经初潮年龄呈现提前趋势,性教育应提前,加强青春期性教育尤为重要。

The little pullet pushed through the crowded henhouse over to the door. She pushed it open and looked outside.

小母鸡艰难地走过拥挤鸡群走到门口,把门打开,往外瞧瞧。

When we were Crown gambling house, i and my friends walked here and paid a visit, just like a group of little fish who missing at a vortices, loosed the orientation, wilder the ideal. Hearing the voice "HUA HUA" made by cones dropped from the punchboard , i said :"sometimes, this noise can catch people's soul."

在皇冠赌场,作为参观者的我们几个朋友,象是迷失在旋涡里的一群小鱼,找不到方向,也找不到理想,听到硬币在老虎机里哗哗掉落的声音,我说:"有时候,这种声音真的让人很容易迷失。"

Lu J. Acoustic computer tomgraphic pyrometry for two-dimensional measurement of gases taking into account the effect of refraction of sound wave paths .

田丰,孙小平,邓福军,邵富群,王福利。声学法电站锅炉温度场重建算法的研究与比较。量子电子学报, 2003, 20(5): 607~612薛飞,黄国权,李晓东等。CCD计测量燃烧室截面温度场的原理研究。

A group of people gathered to plan or discuss an issue, judge a contest, or act as a team on a radio or television quiz program.

专门小组:聚在一起策划或讨论一个问题、裁判一场比赛或在无线电台或电视台小测验节目中充当一个队的一群人

In Chapter IV and Chapter V, we study a deformed t-J model by use of bosonization and renormalization group methods.

文献[1]的作者用玻色化方法和重整化群技术讨论了上述模型在形变参数和J都很小的时候的基本性质。

A two-layer framework with particle swarms cooperative optimization and a mutation parameter is introduced by the QPSCO algorithm for larger searching scale and quicker convergence. Moreover I the residual sum of squares in least-square principle is introduced into the fitness function to enhance the fitting precision of the sensor position curve.

在QPSCO算法中,采用双层的多粒子群协同优化结构,同时引入参数变异策略,在扩大搜索范围的同时加快该算法收敛;将加权最小二乘法的误差平方和引入适应度函数中,以提高传感器位置曲线的拟合精度,从而实现传感器的优化配置。

Breeding - In the wild Altolamps. will spawn using shells or tight openings in rockwork.

饲养– 野生环境下,珍珠虎产卵需要贝壳或者是口小、腔大的天然岩石群中的洞穴。

Breeding - In the wild Altolamps. will spawn using shells or tight openings in rockwork. The female will get out of reach of the male at this time to avoid injury.

饲养– 野生环境下,珍珠虎产卵需要贝壳或者是口小、腔大的天然岩石群中的洞穴。

Finally, the average value, root-mean-square value, maximum, minimum, spike factor of wind force, wind force moment are analyzed to studied the mutually interference influences to the base force of high buildings and group of buildings.

最后分析不同状态下风力、风力矩的平均值、均方根值、最大值、最小值和峰值因子,探讨了风荷载下高层建筑的相互干扰和群楼对建筑物风力影响。

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I didn't watch TV last night, because it .

昨晚我没有看电视,因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来,在北京的很多小区里,电梯液晶电视被撤了下来。

I'm running my simile to an extreme.

我比喻得过头了。