查询词典 pitch ratio

A new polysilicate ferric aluminum was prepared by using water glass,ferric sulfate and aluminum sulfate as raw materials.The conditions of preparing PSFA were optimized: the polymerization degree of silicic acid is 0.5; the molar ratio of Fe3+ and Al3+ to SiO2 is 1: 1; the molar ratio of Fe3+ to Al3+ is 1: 1;and the degree of hydrolysis is 0.5;while the influence of the aging time on the coagulation property of PSFA is not obvious.

用水玻璃、硫酸铁和硫酸铝制取聚硅酸铁铝混凝剂，确定了制备PSFA混凝剂的优化条件：硅酸聚合度η为0.5，Fe3+及Al3+与SiO2的摩尔比为1： 1， Fe3+与Al3+的摩尔比为1： 1，水解度B*为0.5，而熟化时间对PSFA混凝剂的混凝性能影响不明显。

By orthogonal experimental design method, the optimized degumming parameters have been confirmed: preacid processing, the concentration of sulfuric acid 2 g/L, treatment time 120 min, treatment temperature 60℃, bath ratio 1:15; alkali treatment, the alkaline concentration of one-pot 7.5 g/L, that of two-pot 9 g/L, treatment time of one-pot 3.5h, that of two-pot 2h, treatment temperature 100℃, bath ratio 1:20, each concentration of the Sodium Silicate, carbamide, and JFC 2%.

预酸处理，硫酸溶液质量浓度2 g/L，处理时间120 min，处理温度60℃，浴比1：15；碱处理，一煮碱溶液质量浓度7.5 g/L，二煮碱溶液质量浓度9 g/L，一煮处理时间3.5 h，二煮处理时间2 h，处理温度100℃，浴比1：20，其中一煮与二煮中添加2%的硅酸钠、尿素和JFC。

The sensitivity, specificity, accuracy, positive prevalue, negative prevalue, positive likelihood ratio and negative likelihood ratio of hc2 for high-risk HPV were 100%, 87. 1%, 87. 3%, 8.8%, 100%, 7.7 and 0. 000 , respectively ; and those of gene chips were 78.6%, 91.1%, 90. 9%, 9.9%, 99.7%, 8.8 and 0. 235 respectively.

HC2法检测高危HPV对高度宫颈上皮内瘤样病变HSIL的灵敏度、特异度、准确性、阳性预测值、阴性预测值、阳性似然比和阴性似然比分别为100ˇ、87ˇ1ˇ、87ˇ3ˇ、8ˇ8ˇ、100ˇ、7ˇ7和0ˇ000ˇHPV分型基因芯片法以上各指标分别为78ˇ6ˇ、91ˇ1ˇ、90ˇ9ˇ、9ˇ9ˇ、99ˇ7ˇ、8ˇ8和0ˇ235。

At last, the ability to prewarn the financial risk between the new financial prewarning model and the classic Z-score model were compared in terms of first error ratio and second error ratio.

最后，本文利用测试集中样本，将该模型与经典的Z计分模型的预警能力从第一错误率和第二错误率两个角度加以比较。

The tests show that concrete Poisson"s ratio is approximate same value between cylinder and prismoidal sample, and stability length of tested concrete Poisson"s ratio with cylinder sample is longer than with prismoidal sample.

理论上分析了采用圆柱体试件测定混凝土泊松的应变特征，通过试验得出由两类测试试件得到的泊松比近似相同，圆柱体试件测定泊松比时较棱柱体试件的稳定段较长。

The radiational ratio was analysed and it's changing of basing metabolizion's cerebral infarct and normal cerebral with using analysis technology of region of interest,as well as,the radiational ratio of with using same method after acupunctural metabolism.

对38例脑梗死性患者分别行基础状态下的脑灌注显像和神经穴位刺激状态下的脑灌注显像，运用感兴趣区技术测定针刺前后病灶与正常部位脑组织放射量比值及放射量比值的变化。

In the last part , three effective forecasting models of price-earnings ratio are established with many crucial influencing factors . The reliability of these models is above ninety percent, so the investors can utilize these models to forecast each stocks rational price-earnings ratio, then to reasoningly appraise the value of shares.

最后，利用所选择的多个关键因素建立了3个有效的个股市盈率预测模型，模型的可靠性达90％以上，投资者在进行投资分析时，可以利用本文的模型对个股的市盈率水平进行合理预测，从而更加理性地判断股票的投资价值。

Under these conditions, the dependence of the iC4 conversion to MTBE on the reboil ratio follows the same trend as its dependence on the reflux ratio.

在这些条件下，依赖的丁烷转化为甲基叔丁基醚的reboil比例如下相同的趋势，因为它依赖回流比。

For a fixed MTBE purity in the bottom stream, the reboil ratio necessary to operate the column corresponds to the chosen reflux ratio.

有固定的MTBE的纯度在塔底流该比率reboil营运所需的一栏对应于选定的回流比。

A warning should be made regarding the attempt to increase the MTBE purity in the bottom stream beyond a certain value depending on the operating conditions, by increasing the reboil ratio with a fixed reflux ratio.

警告应当就试图提高MTBE的纯度在底部流超过某一价值取决于经营条件，增加了reboil比例固定比例回流。

Consumer preference ; fuzzy partial ordering relation ; condorect function

消费者偏好；模糊偏序关系； condorect函数

And she doesn't have a cat, she has a Mexican hairless.

而且她不养猫，她养了一只墨西哥无毛犬。