随机

Methods A total of 852 children aged from 9 to 10 years were recruited with multi-stage sampling.

方法采用多阶段随机整群抽样法抽取852名北京市城区9～10岁学生。

MethodsRats were divided into two groups: control group and experimental group. The rats' thymus index, production of their serum agglutinin and macrophoge's phagocytic function were tested.

方法将小鼠随机分成空白对照组和复方大枣口服液组，通过对小鼠胸腺指数、血清凝集素产生及巨噬细胞吞噬机能的试验，观察口服液对小鼠免疫机能的影响。

The paper studies the rational back aggraclation width of yellow river dike with reliable theory,researches and formulates the finite element reliability program of Monte-carlo filtration for calculate the failure probability of filtration stability for soil body of different distance from slope base of yellow river dike under design flood level,thus determines the rational back aggradation width.

利用可靠性理论对黄河堤防淤背设计的合理宽度问题进行了系统的分析研究，充分考虑了黄河堤防土体参数的随机变异性，研制了蒙特卡洛渗流有限元可靠度程序，用来计算在设计洪水位下距黄河堤防背河坡脚不同距离的地层土体渗流稳定破坏概率，从而确定合理的淤背宽度。

Explorers can now find random treasure chests scattered all over Agon.

宝箱随机出现在世界各地。

Methods Total 24 rats were randomly divided into 3 groups: control group, diabetic group and diabetic + 5-HT4 agonist group.

雄性SD大鼠共24只，随机分为正常对照组、糖尿病组、糖尿病＋5-HT4激动剂组。

The threat of emergency security incidents is increasingly extruded to people life security and society economy. Restricted by the territory and the economy, it is impossible to set up an integral medical aid post in each district. The medical rescue network system is put forward.

最后是对随机流动网络可靠性研究的一个实际应用的例子，突发公共安全事件对人类造成的威胁，由于地域和经济因素，很多区域无法建立完善的医疗救护站。

Treatment group:oxygen compressed air-driven atomization of ventolin,atrovent,inhalants were used pulmicort turbuhaler and formoterol,the control group:hyphylline 0.25 g plus 5% glucose 250 ml intravenous injection,twice a day,with oxygen at the same time,clinical observation to improve the situation.

将86例哮喘急性中、重度发作的患者随机分为两组。治疗组：氧气驱动空气压缩雾化应用万托林、爱全乐。吸入剂使用普米克都保和奥克斯都保。对照组：应用二羟丙茶碱0.25 g加5%葡萄糖液250 ml静脉注射，每天2次，同时配合吸氧，观察临床改善情况。

They were fed with for four additional levels of β-carotene which was 0, 25 mg/kg, 50 mg/kg, 100 mg/kg (air-dry matter of the dietary) within 6 months.

选取20头荷斯坦种公牛，单因子试验设计，随机分为4组，分别饲喂β-胡萝卜素添加水平0、25、50、100 mg/kg的日粮，试验期为6个月。

Any measurement is subject to imperfections; some of these are due to random effects, such as short-term fluctuations in temperature, humidity and air-pressure or variability in the performance of the measurer.......

任何测量都是非理想性的，部分是因为温度、湿度和气压或者测量者的操作变动性等因素在短期内的波动等这些随机效应。。。。。。。

Methods:To review120 patients who were first aid in pre-hospital by air-way during January 2005 to2007. make two groups Randomly,one were observation group, the other were controls by tradition methods.

总结2005年2月至2007年2月在院前急救中行气道通气的患者情况，随机抽取60例使用口咽通气管的患者作为观察组，并对应抽取60例传统方法气道通气患者作为对照组。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。