1、

study on accuracy of mining reserves and recovery coefficient calculating for top-coal caving mining

放顶煤开采采出量与采出率计算精度的探讨

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2、

the increasing of the incoming flow mach number will decrease the total pressure recovery coefficient.

来流马赫数的增加会造成进气道总压恢复系数的降低。

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3、

And three-dimensional sidewall compression inlet with 25 percent cowl position has high mass capture and total pressure recovery coefficient and isolator exit flow flied is homogeneous.

整流罩位置为25%的三维侧压进气道可以获得较高质量捕获和总压恢复系数,且隔离段出口流场比较均匀。

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4、

Design the orthogonality experiment impact of mole of match ratio and reactive pH having discussed three kinds crystal structure over guanite precipitation on reaction phosphorus coefficient of recovery ( PRE).

设计正交实验讨论了三种构晶离子的摩尔配比和反应的pH对鸟粪石沉淀反应磷回收率(PRE)的影响,最后向反应体系中添加Ca2+考察不同Mg/Ca对PRE和沉淀产物成分的影响。

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5、

The high coefficient of determination ( 0.9968 and 0.9996) and high recovery ( 90.9 and 92.7%) for the colorimetry and HPLC indicated that both methods could be used to quantify the solanine content.

两直线的高相关系数表明,两种方法都可以用来测定龙葵素的含浙江人学硕卜学位论文量。其回收率都比较高,分别为92.7%、90.9%,且变异系数分别为0.1%、0.2%。

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6、

Conclusions The method described above is simple and suitable with better accuracy and precision. In this research, the rate of recovery is from 97.6% to 101.7%, and the coefficient variation is under 2.0%.

结论高温燃烧水解-氟电极法具有良好的准确度和精密度,回收率为97.6%-101.7%,变异系数均为2.0%以下,且简单易行。

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7、

The result was found to be approximately identical with that in the Pharmacopeia. The average recovery of the method was 100% ( coefficient of variation was 0.35%).

本法与药典方法对照,测定结果基本一致,本方法的回收率平均值为100.0%,变异系数为0.35%。

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8、

In this method, the generalized recovery force mode was selected as the basic vectors, and a set of constraint equations and weight factor was introduced. Using the least square method, optimal combination coefficient for the basic vector can be obtained.

该方法选择广义恢复力的本征模态作为构造多目标等效静力风荷载的基本向量,并引入约束方程组和权值因子,根据最小二乘法,可以得到这些基本向量的最优组合系数。

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10、

It is proved that the cracking-strength and the unloading coefficient of the pole is higher, the performance of crack closing and deformation recovery is well, the crack distribution states short-thin and unlinked up, and the ductile failure property is improved.

结果表明:电杆的抗裂度和卸载系数比较高,表现出良好的裂缝闭合性能和变形回复性能,裂缝呈短细非贯通分布状态,并呈现出一定的延性破坏性质。

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12、

compensation fee will not be levied by the method of some percentages of sales income multiplied by the coefficient of mining recovery, classified by mineral species and administrative jurisdiction of taxation instead.

取消补偿费一律按销售收入一定比例乘开采回采率系数这一征收方式,提出了按矿种分类、按征收管理权限分级新的征收方式。

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13、
14、

Results: The correlation coefficient was 0.999, RSD was 1.3 %, the average recovery was 90 % ~102.5 %.

结果: 优化微波消解条件,标准曲线相关系数为0.999, 相对标准偏差为1.2%, 平均回收率90%~102.5%.

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15、

The average recovery of cyanocobalamin reaches 100. 9% and the coefficient of variation is 1. 6%.

实验中维生素B(12)的平均回收率达100.9%,RSD为1.6%。

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16、

The actual retrofit results show that the coefficient of heat recovery is increased greatly, and the crude preheating temperature is raised from 288 ℃ to the highest of 303 ℃, The in-vestment payback time is only half year.

实践结果表明,原油预热终温由原来已经较高的288℃进一步提高最高可达303℃,投资回收年限为半年。

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17、

The standard deviation is 0.9 μ gCu(ⅱ)/ 50ml, the coefficient of variation is 1.6% and percentage recovery is in the range 92-110%.

该方法的标准偏差、变动系数和回收率分别为0.9μgCu(Ⅱ)/50ml,1.6%和92~110%。

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18、

Cavity length depth ratio strongly influences flow field, total pressure recovery, drag coefficient.

凹腔长深比对流场特性 、 总压恢复 、 燃烧室阻力影响显著.

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19、

talking about the coefficient mining recovery

也谈开采回采率系数

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20、

Integrating the 2-D diffusion equation, the coefficient of saturation recovery is derived and its characteristics can be revealed clearly. Then the theoretical expression of coefficient of saturation recovery under the strong equilibrium condition and the corresponding calculating value have been obtained.

在此基础上积分二维扩散方程,得到了恢复饱和系数,阐述了它的特性,进而导出了在强平衡条件下的恢复饱和系数的理论表达式和相应的数字结果。

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