选用

B Select a formula and calculate the gravitational potential energy gained by the ball at its highest point.

b 选用公式计算球在最高点时的重力势能。

The approach we have taken is to define a Core word set establishing a greatest lower bound for required system functionality and to provide a portfolio of optional word sets for special purposes.

我们采用的方式是定义一个核心词集建立於一个最低的系统功能需求底限，而且提供一个选用词集的投资组合给特殊需求所用。

Moreover, the studio ceiling tone uses elegantly, bright, the gentle tint elected, like pale blue, shallow cream color, greenishness and so on.

另外，书房的天花板色调应选用典雅、明净、柔和的浅色，如淡蓝色、浅米色、浅绿色等。

This article introduces the advan- tages of a four-layer mat for cultivating greensward from the principle of selecting material,the structure of the mat ,process- ing method and its functions,and analyzes its effects on the growth of grass and the control of soil loss.

文章介绍了4层式草皮培育垫材料的选用原则、结构、加工方法及其作用，分析了其对草的生长、水土流失控制的作用以及生产成本等方面的情况。

Broad and high resistance genes against brown planthopper derived from resource "2183" of Guangxi common wild rice, Oryza rufipogon Griff were tagged and mapped in this study. Genetic homozygous resistance material,"2183 "was obtained by anther culture technique and used to cross with TN1, a susceptible rice variety.

本研究选用对稻褐飞虱具有广谱高抗性的普通野生稻资源"2183"为试验材料，通过花药培养获得抗性纯合体，与感虫性材料TN1杂交和测交，获得TC_1F_2作图群体，用稻褐飞虱生物型2对群体进行抗性鉴定。

The mechanical and electrical parts and hydraulic components that grinders adopt should select state-of-the-art products.

磨床设备所采用的标准机电零部件和液压元器件应选用国际先进水平产品。

Cutting machine users should be based on power and speed, choose different specifications and speed of the grinding wheel.

用户应根据切割机的功率和转速，选用不同规格和转速的砂轮。

C. Select proper sealing grommet according to type of heating cable.

c。 应按电热带的型号选用所附适当的密封圈。

Here we found the optimum situation to determine LAP: the concentration of Tris-HCl is 125 mmol L^(-1) and the optimum pH is 7.2, temperature is 37℃, under this condition, Michaelis constant is 0.15 mmolL^(-1), ground substance concentration is 6.0 mmol L^(-1), with 157 health people serum samples (81 from male, 76 from female),x± s=35.7 UL^(-1)±8.2 UL^(-1), we established the method and reference value for clinical application and automatic analysis.

测定亮氨酰氨基肽酶的最适条件：选用浓度为125mmolL^(-1)的Tris-Hcl缓冲液，最适pH为7.2，温度取37℃，得出在此实验条件下的米氏常数Km为0.15mmolL^(1)，亮氨酰对硝基苯胺浓度取6.0mmolL^(-1)，取健康体检者血清157例（男81例，女76例），测得x±s为35.7UL^(-1)+8.2UL^(-1)，建立了适合于临床应用及有动生化分析仪的方法和参考值。

In application, to ensure the linear phase of image, FIR filter is usually chosen as it can realize the strict linear phase under the conditions. Designing FIR filer actually means solving a group of fine coefficients.

在应用中图像的处理要求不能有明显的相位失真，所以选用FIR滤波器，因为它在一定的对称条件下可实现严格的线性相位。

I am accused of being overreligious," she said in her quiet, frank manner,"but that does not prevent me thinking the children very cruel who obstinately commit such suicide.""

客人们在卡罗利娜·埃凯家里，举止就文雅一些，因为卡罗利娜的母亲治家很严厉。

Designed by French fashion house Herm è s, this elegant uniform was manufactured in our home, Hong Kong, and was the first without a hat.

由著名品牌 Herm è s 设计，这件高贵的制服是香港本土制造，是我们第一套不配帽子的制服。