查询词典 systematic sample

The results show that antioxidation property of the modified phosphatic coating after oxidized for 30h at 700℃ is superior, weight loss percent of coating sample is only 1.76％. After thermal shock, i.e. for 3 min at 900℃ for 2 min at room temperature circulating about 30 times, for 3 min at 1100℃ for 2 min at room temperature circulating about 10 times, weight loss percent of coating sample is up to 1.97％, and coating don't slough off.

结果表明：在700 ℃氧化30 h后，改性磷酸盐涂料的防氧化性能优异，涂层试样的氧化失重率仅为1.76％，经过900 ℃、3 min 室温、2 min循环30次和1100 ℃、3 min 室温、2 min 循环10次连续热震后，涂层试样的失重率为1.97%。

The introduced techniques include changing the state of firebox in lamellar sample and the state of the sample in firebox, changing oxygen pressure in firebox and adjusting operation mode of rotating key which controls the electrical current of portfire.

该文分析了燃烧热测定实验常见的失败原因，并针对其中的主要原因，提出了 4点改进方法，即改变燃烧丝在片状药品中的状态和位置，改变药片在氧弹内坩埚中的状态，改变氧弹内氧气的压力值和改变点火电流控制转钮的操作方式。

The ice/liquid mixtures of the coolant and the sample solution were respectively added in the Dewar bottle and the sample container to precool for 2～3 hours under stirri...

实验结果显示，改进的凝固点降低法测定摩尔质量实验装置结构合理，其测定误差可控制在±0.001℃以内。

The ice/liquid mixtures of the coolant and the sample solution were respectively added in the Dewar bottle and the sample container to precool for 2~3 hours under stirring. Then some of the coolant liquid was replaced with coolant ice, the motor stirrer was restarted, and the temperatures were read from the Beckmann thermometer.

实验时，先调节寒剂的组成使其凝固点低于待测溶液的凝固点～2℃，然后分别在保温瓶和凝固点杯中加入寒剂和待测溶液的冰水，启动搅拌器预冷却2~3小时，接着更换保温瓶中的寒剂冰水，重新启动搅拌器，记录贝克曼温度计读数。

Therefore, there're only single charged parent ions of the sample gas molecule under the condition of photons' irradiation effect, and no fragment ions produced. Consequently, the mass spectra obtained from photoionization is very simple, and the sample gas can be detected without preseparation.

样品气体分子在光子的照射作用下只产生单电荷母离子，不产生碎片离子，以该电离方式获得的质谱图非常简单，因此气体样品不需分离即可进行检测。

Continuously delimits the long-base method with the plate to pick from 234 from Xi'an each place (Hu Xian, Xianyang, north thunder and so on) the soil sample, the water sample, the mess as well as the vinegar factory waste residue in and so on separated obtains 5 to be able to use the straw stalk fermentation production single cell protein the saccharomycetes.

用平板连续划线法从234份采自西安各地的土样，水样，苔藓以及醋厂废渣等中分离得到了5株能利用秸秆发酵生产单细胞蛋白的酵母菌。

And Sapium rotundifoliumx Sample area: 400m2 , Sample , land: Baisa ,Yangsuo county , Altitude: 250m

布和重要值指数样地400m2 ，阳朔县白沙乡都荔村附近山坡，海拔250m

ResultsMany active constituents that extracted from ten batches of sample of Radix Scrophulariae (Scrophularia ningpoensis Hemsl.), which collected from Chongqing Wulong county, were evaluated by HPLC. The models of standard HPLC Fingerprint of Radix Scrophulariae were established; Taking the cinnamic acid as the reference peak, the relative time and the relative peak area ration of various characteristics peak were calculated, and the sample from Zhejiang province could be distinguished by this model and the relative peak area ratio of the characteristic components.

结果对重庆市武隆县10批次玄参样品的多个活性成分进行综合评价，筛选出重庆市道地药材玄参为建模对象，合成出玄参的标准HPLC色谱指纹图谱模型；并用此模型和特征成分的相对峰面积比值准确地区分浙江省磐安县等不同产地玄参。

This research used pane sampling,random sample 50 soil samples in 0-20cm of each site in two adjacent sites representing the Alpine meadow and Alpine shrubland respectively, and note detailed its living surroundings of each soil sample of shrubland according to under shrubs and between shrubs in study area in Hongyuan county of the northwestern plateau of Sichuan province, and analyzed the character of these soil samples.

以川西北高原红原县为研究区，用方格取样法，在相邻的高寒灌丛草甸和高寒草甸样地中分别随机取0-20cm土样50个，对每个取自灌丛样地的土样将其生境分为灌丛下和灌丛间并进行详细的记录，还分析了所取土样的土壤性状。

A mixture of lithium tetraborate (Li2B4O7) and lithium metahorate (LiBO2) in a ratio of 2:3 and mass ratio of sample to flux of 1:10 were used with sample fusion condition of 1200℃ and 15 min.

试样和混合熔剂的质量比为1：10，在此稀释比时试样在熔剂中的分散度适当，可适应各个组分的测定。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。