the level of height,weight and chest circumference increase with age among 7-18 year old students of zang nationality in tibet.

西藏藏族學(xué)生的身高九一国产在线视频免观看、體重和胸圍3項(xiàng)指標(biāo)均隨年齡的增長(zhǎng)而上升十八岁美女一级片。

Height, weight, chest circumference, and body mass index were analyzed.

95 5www自拍.com、1 974和 2 0 0 1年度的全國(guó)BMI平均值分別為 2 0 3黄视频毛片网站、2 0 1禁止18岁看的黄色一级片、1 9 8kg/m2 免费色色网页。西南、西北地區(qū)體重增加最少直播欧美牲爱，胸圍97免费在线视频观看、BMI為負(fù)增長(zhǎng)。

Methods The sample was obtained from the medical examination data of primary and middle school students in 1982 and 2000 to analyze the changes of body height, body weight, chest circumference and Ververch Index.

采用整群抽樣對(duì)我省城市與鄉(xiāng)村 7～ 18歲學(xué)生 2 0 0 0年與 1982年體檢資料中的身高白白在线播放免费视频、體重在线不卡高清无码、胸圍和維爾維克指數(shù)的變化情況進(jìn)行分析比較黄色免站视频。

Their body height, body weight and chest circumference were measured and menarchal time of the girls asked.

同時(shí)，測(cè)量其身高日批黄色视频、體質(zhì)量免费精品国产污网站在线观看、胸圍并詢問女生月經(jīng)初潮時(shí)間。

Student ; Body height ; Body weight ; Chest circumference ; Development

學(xué)生欧美日韩国产精品自拍；身高伊人网黄色；體重；胸圍在线观看国产妓女网站；發(fā)育

Methods By use of cluster sampling,students from 52 schools(1 high school,11 junior middle schools,40 primary schools)in Chengguan District were investigated and measured in height,weight,chest circumference and pulse.In the end,all the results were analyzed.

方法采用整群抽樣的方法久久免费视频网站，以蘭州市城關(guān)區(qū)52所學(xué)校(高中1所、初中11所欧美精品A片视频黑人、小學(xué)40所)7~18歲兒童青少年為對(duì)象www.bbixx15，對(duì)所有對(duì)象進(jìn)行身高、體重毛片久久、胸圍孕妇与5个黑人孕交、脈搏測(cè)量和統(tǒng)計(jì)學(xué)分析。

By statistics body height国产男女猛烈无遮挡动态图蜜臀、body weight and chest circumference,analysis growth and development state in different age stage and different region.

本課題利用長(zhǎng)春地區(qū)城市與農(nóng)村中小學(xué)體檢后欧美日本亚欧在线观看欧亚，15所學(xué)校提供的學(xué)生健康檢查表和血清樣本作為調(diào)查對(duì)象和實(shí)驗(yàn)材料，以身高免费观看黄色网站入口、體重国产又大又粗免费视频、胸圍作為反映青少年生長(zhǎng)發(fā)育水平的主要指標(biāo)，分析不同年齡段www.美女中文字网络、城市與農(nóng)村青少年的生長(zhǎng)發(fā)育狀況www.av.。

This paper applies the concept of "contact" in Differential Geometry into the machining of sculptured surfaces, presentes the contact principle of the machining of complicated surfaces, using the circumference circle of the cylindrical cutter to sweep curved surfaces instead of ball-end mill .

把微分幾何中曲線與曲面之間的&切觸&概念應(yīng)用于復(fù)雜曲面的數(shù)控加工，提出用圓柱銑刀和圓錐盤銑刀的外圓在五坐標(biāo)聯(lián)動(dòng)中加工三維自由曲面的最佳切觸條件黄色视频网址在线看。

After finger-tightening the bolts so that the circumference of the inside bore of each flange snugly touches the gasket seal of the companion flange, make sure the valve is aligned before proceeding.

在手動(dòng)緊固螺栓性爱一区二区三区，使得每個(gè)法蘭的鏜孔內(nèi)側(cè)圓周貼緊配對(duì)法蘭的密封墊片后，在繼續(xù)安裝前春色校园激情综合在线影院，要確認(rèn)閥門已經(jīng)對(duì)齊午夜影院操久久久。

Bolting –Snug up the bolts finger-tight so that the circumference of the inside bore of each companion flange evenly touches the face-seals of the butterfly valve.

螺栓–調(diào)整好螺栓的手指緊固部分，使得每個(gè)配對(duì)法蘭的內(nèi)腔圓周能夠均勻接觸蝶閥的面密封国线播产色产黄。