查询词典 ratio table

Nature, most elements have two or more isotopes, the same kinds of elements in the quality of the various isotopes of different, but the types and proportion constant (except for radioactive elements). In 1961, the carbon content of the most abundant in nature, a kind of isotope, carbon-12 atom of a quantity and quality of C as a 12 mass units to it as "benchmarks" for all isotopes of an element according to the average abundance The ratio of the benchmark is the atomic weight of this non-prime, that is listed in the periodic table of atomic weights.

自然界中大多数元素都有两种或更多的同位素，同种元素的各同位素质量不同，但其种类和比例是恒定的。1961年，把碳在自然界含量最丰富的一种同位素，碳12的一个原子的质C量定为12个质量单位，把它作为"基准"，某种元素的所有同位素按丰度的平均值与基准之比，就是这种无素的原子量，即元素周期表列出的原子量。

"Collection" series, barrel-shaped section of the table to say it seems very simple, but from an aesthetic point of view, it is necessary to make a symmetrical and harmonious watchcase bucket is indeed very difficult, even if only both sides of the ratio of bias the thousandths of millimeters, also can not tell where people feel it is wrong to feel uncomfortable.

"典藏"系列，酒桶形的表款说起来好像很简单，可是从美学的角度来讲，要做出对称而和谐的桶形表壳，确实是很难的，两边的比例就算只偏差了千分之一毫米，也会让人有种说不出哪里不对却就是不舒服的感觉。

The following table is a rough guide to octane values per engine compression ratio for a carburettor engine without engine management.

对于有着先进管理系统的现代的电喷汽车，这些辛烷值可以下调5到7个点。

The table depicts the ratio of a to b from...to...

该表格描述了。。。年到。。。年间a与b的比例关系。

The main content of preparation before scoring is selection of characteristics, which mainly uses Logistic regression, contingency table analysis and artificial neural network. Personal credit scoring and evaluation mainly uses general discriminant analysis, refined decision tree model, improved genetic algorithm, probability neural network and behavioral scoring model. The effect test of personal credit scoring includes fitting effect test and fitness test. The former involves right prediction rate, Kappa consistency test, ROC curve, and the latter includes likelihood ratio test, Hosmer-Lemeshow test, etc.

评分前的准备工作主要是特征变量的筛选，其中使用的主要方法为Logisitic回归、列联表分析和人工神经网络；本文使用的个人信用评分与评估方法为广义判别分析、精练决策树模型、改进遗传算法、概率神经网络和行为评分模型；个人信用评估的效果检验包括拟合效果检验和拟合优度检验两个方面，前者涉及的方法有预测的正确率、Kappa一致性检验、ROC曲线，后者主要包括似然比检验、Hosmer-Lemeshow检验等。

The total population of a district in Beijing is predicted in this paper using Logistic Model.The ratio of population is also calculated using the mortality table.Furthermore,the labour resource and the number of old-age population are predicted combining Logistic Model with the mortality table,and relevant policies are suggested based on the above analysis.

本文用Logistic模型对北京某区的总人口进行了预测，用生命表滚动预测模型推算出了该区的人口结构比重，并利用这两个模型相结合的混合预测方法，对该区的劳动力资源和老年人口数进行了预测和分析，并在此基础上提出了相关的建议。

Through a plenty of data of compressal tests with a lot of samples which are different in moisture content and voids ratio , the relation between pressure,moisture content, cavity ratio and pressural modulus is disclosed in the paper,a table that is suitable for xian district is also made based on the data .

增湿变形是在压力作用下变形达到稳定后由于含水量增大而产生的附加变形，黄土地基可因水管漏水、建筑物排水不畅、地下水位上升等原因引起地基土的增湿，计算增湿变形的关键是研究土体含水量变化后引起的模量变化。

This table assumes an 8:1 working load ratio.

这张表(图中2所示)采用的是8：1的工作负荷比来做的。

The culture ingredients and conditions were optimized with the orthonormal table L_9(3~4) method. Studies showed that the culture components for optimization of β-mannanase production were yeast extract 20 g/L, Konjak powder 20 g/L,(NH_4)_2SO_4 2 g/L, KH_2PO_4 1 g/L and MgSO_4 · 7H_2O 1 g/L; and the optimal culture conditions were seed incubation time 8-12 h, inoculation ratio 6%, culture volume 25 mL, pH 7.5, fermentation temperature 40 ℃ and fermentation time 25 h.

通过正交设计方法筛选优化该菌培养基配方和产酶条件，培养基配方为：酵母抽提物20g／L、魔芋粉20 g／L、(NH_4)_2 SO_4 2 g／L、KH_2PO_4 1 g／L、MgSO_4·7H_2O 1 g／L；产酶条件为：菌种种龄8～12h、接种量6％、装液量25 ml、pH7.5、培养温度40℃、培养时间25h。

According to the wire electrode on the trajectory of the different forms of control, WEDM can be divided into three types:* is a copy-control, cutting their lines in advance to create the shape of the workpiece and the same mode *, When the rough machining parts and die at the same time * Clamping in the machine tool table, in the process of cutting wire electrode tightly * close to the edge of model for mobile track, thus cutting out the model * with the same shape and precision to work; another One is the optical tracking control, the cutting in line before the first parts in accordance with drawings by a certain ratio of enlarge depicts an electro-optical tracking maps, drawings will be processed when the machine electro-optical tracking placed on the stage, followed on the stage The first photo has to follow the ink line graphics track movement, and then through the use of electrical, mechanical linkage to control the machine tool table work together with the relative electrode wire Xiang Sixing do sports in order to cut out the pattern and shape of the workpiece to the same; a re - Is a digital process control, advanced digital automatic control technology, machine-driven process in accordance with the geometry of the workpiece before the parameters of good pre-processing CNC automatic completion of the processing, production do not look like without drawing board also plans to enlarge, in front of more than two Control in the form of higher precision processing and broad scope of application, at home and abroad for more than 95% of WEDM have been using digital technology.

根据对电极丝运动轨迹的控制形式不同，电火花线切割机床又可分为三种：一种是*模仿形控制，其在进行线切割加工前，预先制造出与工件形状相同的*模，加工时把工件毛坯和*模同时装夹在机床工作台上，在切割过程中电极丝紧紧地贴着*模边缘作轨迹移动，从而切割出与*模形状和精度相同的工件来；另一种是光电跟踪控制，其在进行线切割加工前，先根据零件图样按一定放大比例描绘出一张光电跟踪图，加工时将图样置于机床的光电跟踪台上，跟踪台上的光电头始终追随墨线图形的轨迹运动，再借助于电气、机械的联动，控制机床工作台连同工件相对电极丝做相似形的运动，从而切割出与图样形状相同的工件来；再一种是数字程序控制，采用先进的数字化自动控制技术，驱动机床按照加工前根据工件几何形状参数预先编制好的数控加工程序自动完成加工，不需要制作模样板也无需绘制放大图，比前面两种控制形式具有更高的加工精度和广阔的应用范围，目前国内外95％以上的电火花线切割机床都已采用数控化。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。