查询词典 cubic equation

A quasi one-dimensional, time dependent system model based on the parallel compressor theory was used to compute the effect of inlet distortion on turbine engine stability; Through Modifying steady state continuum equation, momentum equation and energy equation, the effect of power extraction and additional bleed on turbine engine running line was computed. Unsteady state continuum equation, momentum equation and energy equation were solved for computing the effect of acceleration on turbine engine running line.

其中，进气畸变对发动机气动稳定性影响的计算采用平行压气机模型，基于李亚普诺夫理论的方法完成；附加引气、功率提取对发动机气动稳定性的影响采用通过对发动机转子间质量、动量、能量守恒方程进行修正的方法进行；加速过程对发动机气动稳定性的影响采用欧拉方法求解动态的质量、动量、能量守恒方程的方法完成；最后采用&层迭&的方法进行各种降稳因素的综合评估。

The method that simple cubic equation was changed from general to standard was introduced and the distribution of standardized real root was illustrated, which solved the problem of the distribution of any real root for simple cubic equation.

摘要介绍了一元三次方程一般式化为标准式的方法，结合图形给出了标准式的实数根的分布情况，从而解决了任意一元三次方程的实数根的分布的问题。

At and , we can get a univariate cubic equation in and its three roots . By the dependence of the roots and the coefficients of the equation, we can choose corresponding space points ( such that the distance is the shortest from to the point with parameters and . Thereby we can get all the data of discrete points on the cubic curve of blending surface at . Again we denote the maximum value and minimum value of planar parameter with which meets by and respectively.

利用根与系数的连续相依性，可以选相应的空间点使其距离的圆截线上对应值的点最近的两个根，从而得到处拼接曲面的截线的离散点的数据并确定出与相截的平面参数的最大最小值类似地由处拼接曲面截线的离散数据得到处的离散数据，这样可以依次计算出拼接曲面上对应所有参数点的离散点的坐标。

A unit of cubic measure used in stonework, usually 16.5 feet by 1.0 foot by 1.5 feet, or 24.75 cubic feet (0.70 cubic meter).

杆：用于石料物容量测量的单位，常为16.5英尺乘1英尺乘1.5英尺或24.75立方英尺0.70立方米

Weight per Volume: Tons per Cubic Yard, Pounds per Cubic Yard, and Kilograms per Cubic Meter.

重量每卷：吨立方码，磅每立方码，和公斤每立方米。

The total water resources in this region average of 200 million cubic meters, flat-year 172 million cubic meters of water, dry years, 105 million cubic meters, mainly by the ground water, groundwater, composed of two parts, groundwater is mainly Quaternary diluvium Diving .

本地区水资源总量年平均为2.00亿立方米，平水年1.72亿立方米，枯水年1.05亿立方米，主要由地上水、地下水两部分组成，地下水主要是第四纪洪积物潜水。

Mine is too ancient geological ore mixed granite and granite porphyry, ores major components of SiO2, accounting for 76.54%, Al2O312.56%, Qianhui, the fine-grained gray granite block change crystal structure, long-ramp of 27 -- 36 percent, longer-35-42 percent, 20-29 percent quartz, rock weighing 2.6 T/m3, hardness of 5.9-6.3 degrees, the porosity of 0.62-1.03 percent, compressive 1670-1931 kg/cm2, bending 141-167 kg / cm2, ore reserves 2000 investigation Grade D geological reserves 10.02 million cubic meters, designed for the use of reserves of 7.99 million cubic meters; mining area of 0.4 cubic kilometres, the highest elevation of 151 meters, the minimum 56 meters, hilly slope, with perennial Shuixi, More sparse vegetation.

矿山地质矿体属太古代混合花岗岩及花岗斑岩，矿石主要成分SiO2，占76.54%，Al2O312.56%，浅灰，灰白色的细粒花岗变晶块状构造，斜长石含量27-36%，更长石35-42%，石英20-29%，岩石体重2.6T/m3，硬度5.9-6.3度，孔隙度0.62-1.03%，抗压1670-1931kg/cm2，抗折141-167kg/cm2，矿石储量2000勘测D级地质储量1002万立方米，设计利用储量为799万立方米；矿区面积0.4立方千米，最高海拔为151米，最低56米，丘陵缓坡，无常年水溪，植被较稀疏。

It's the first time that from the angle of computational mathematics combined with the structure model of parallel machine, the parallel degree of the relevant algorithms in orthopaedics clinic engineering modeling system, such as piecewise cubic Lagrange interpolation formula, piecewise cubic Hermite's interpolation formula, cubic spline, Chebyshev multinomial fitting algorithms, least square method and contour curve multinomial algorithms, were discussed.

论文首次从计算数学的角度并结合并行机的结构模式出发，讨论了在骨科临床工程造型系统中可能涉及的如分段三次拉格郎日插值公式、分段三次埃尔米特插值公式、三次样条函数、切比雪夫多项式拟合算法，最小二乘法以及轮廓曲线多项式求值算法的并行度。

On the basis of photovoltaic signal of cubic GaN, we not only obtained the bandgap of cubic GaN, but also obtained the minority carrier diffusion length of cubic GaN which is in the range of 0.32 and 0.14μm.

通过对光伏曲线的研究了，提出了一种测量禁带宽度的方法，并测量出n型GaN的少子扩散长度在0.14μm和0.32μm之间，与六方相GaN的报道结果一致。

Haikou newspaper December 21 (Reporter correspondent Xiaojian Hou Chen Tao) 0:00 yesterday, the province on the gas-powered taxi, bus vehicles not levy a surcharge to use compressed natural gas vehicles from 3.9 therefore Yuan / cubic meter reduced to 3.2 yuan / cubic meter, per cubic meter of natural gas fell by 0.7 yuan.

本报海口12月21日讯(记者侯小健通讯员陈涛)昨日零时起，我省对以燃气为动力的出租车、公交车暂不征收车辆通行附加费，车用压缩天然气因此由原来的3.9元/立方米降低至3.2元/立方米，每立方米天然气降了0.7元。

Liapunov—Schmidt method is one of the most important method in the bifurcation theory.

Liapunov—Schmidt方法是分叉理论的最重要方法之一。

Be courteous -- even when people are most discourteous to you .

要有礼貌──即使当別人对你最不礼貌的时候。