文章主要介绍了如何使用熔融石英去校准针尖的面积函数。
The article emphasizes how to use fused quartz to calibrate the probe area function.
调用该函数来计算面积。
接着，创建一个spl函数，它将返回给定半径的圆的面积。
Next, create an SPL function that returns the area of a circle given its radius.
如果数据集较大，或者经常发出请求圆面积的查询，那么创建函数索引将有助于提高性能。
This is beneficial when the dataset is large and the frequency of queries that request the area of a circle is high.
至于定义嘛，实际上，就是把区域分割成许多小区域，再把一点的函数值乘以那个小区域的面积，然后对乘积求和。
And the definition, actually, is we split the region into lots of tiny little pieces, we multiply the value of a function at the point times the area of a little piece and we sum that everywhere.
本示例展示如何对圆的面积创建函数索引。
This example shows how to create a functional index on the area of a circle.
然后定义一个函数来计算Rectangle的面积。
Then define a function which computes the area for the rectangle object.
你们都知道，要求这个面积是非常简单的，如果你们想的话，可以积分除了椭圆函数以外的任何函数。
So, you know, if you find that the area is too easy, you can integrate any function other than ellipse, if you prefer.
类似于“将长度和宽度以参数的形式传递给面积和周长，而非在构造函数里指定”这样的错误，可以通过重构来修正。
Mistakes, like passing the length and width as parameters to Area and Perimeter rather than to the constructor, are corrected by refactoring.
这个函数表示公园的效用以递减的幅度随公园面积的增加而增加，同时随参观人数的增加而减少。 这个函数说明了为什么要公共建设公园。
This functional form builds in the property that larger parks provide more value at a diminishing rate, but there is an effect from congestion.
示例：对圆的面积执行函数索引
并且研究了非晶碳薄膜的场发射特性，计算了薄膜的功函数、实际发射面积和发射点密度。
The field emission properties were studied, and the work function, actual emission area and density of emission spot were calculated.
区域R的面积是函数1在R上的二重积分。
在本章，我们总算要写一些有返回值的函数了。第一个例子就是一个计算给定半径的圆的面积的函数。
In this chapter, we are (finally) going to write fruitful functions. The first example is area, which returns the area of a circle with the given radius.
下面我们写一个函数作为例子，这个函数需要两个点，一个是圆心，一个是圆周上面的点，函数要用来计算这个圆的面积。
As an example, we'll write a function that takes two points, the center of the circle and a point on the perimeter, and computes the area of the circle.
滑坡预测模型的预测率是，模型预测结果图的各个级别类型中，未用于建模的滑坡面积百分比的累积分布函数。
Prediction rate is the cumulative distribution function of the area percentage of the landslides not used to construct a model with respect to the classes in the prediction map generated.
实践证明，在自动扶梯zc1蜗杆传动模糊优化设计中，选择啮合面积为目标函数是正确的、可行的。
It is proved correct and practical to choose the meshing area as the objective function in the fuzzy optical design of ZC1 worm transmission in escalator.
研究在数字最优预见控制中以面积误差作为评价函数的轨迹跟踪最优预见控制方法。
An optimal preview control method of trajectory tracking performance index function based on trajectory error area in digital optimal preview control is investigated.
通过质量加权平均，给出了石墨粉尘的体积、面积和直径分布函数。
By the mass-weighted average, the distribution function of volume, area and diameter for graphite particle were obtained.
根据中国近40年逐日降水观测资料，分析了大范围空间域上不同等级日降水量与其占有面积的函数关系。
A function relationship between the daily rainfall over a large area and its area has been researched using the observed precipitation data in China in recent 40 years.
在经验法则中，轴承承载力是轴承转速和轴承设计面积的线性函数。
It is shown that load capacity is a linear function of bearing surface velocity and bearing projected area.
实际问题中的最值问题，常见的有价格和利润的最值问题和面积最值问题，用二次函数模型就能迎刃而解。
The optimal value problems seen in real life such as price, benefits and area measurement can be solved with quadratic function easily.
本文推导了按重量加权的长度变异系数与纤维束截面积分布函数之间的关系。
The relationship is derived in this article between the weighted average of length variation coefficient and the distribution function of the cross-section area of fibre bundle.
本文以总传热面积为目标函数，对不可逆卡诺制冷机进行优化分析。
The total heat-transfer area is taken, as an objective function to analyse the optimal performance of an irreversible Carnot refrigerator.
本文提出了一种新的检测基音周期的方法：“面积差函数法”。
In this paper, we present a new method, which is entitled "the Function of Area Difference", to detect the pitch period of speech signal.
图1中指出了每平方英寸或者是每平方厘米辐射面积所能负荷的理想能量和熔炉温度的函数关系。
Figure 1 shows the recommended watt loading for a square inch or square centimeter of radiating surface as a function of furnace temperature.
由推导出的齿端和槽端面积及其圆心矩公式，首先得出轴套（侧板）内外两侧所受的力和力矩关于齿轮基本参数的函数表达式。
Based on both the area formula of gear tooth and groove and their respective center multiplying formula, the force and moment expressions of both sides of side-panels could be brought out at first.
本文论述了用调制传递函数面积值（简称MTFA）评价望远系统象质的适用性；
The feasibility of MTFA (modulation transfer function area) for assessing imaging quality of visual telescopic systems is described.
风团及潮红应答的曲线下面积作为时间函数（主要疗效变量）用于方差分析。
The areas under the curves of the wheal-and-flare responses as a function of time (primary efficacy variables) were compared using analysis of variance.
本文使用不变加权面积平均值性质刻画了单位圆盘内的调和函数。
In this paper, we give a condition for harmonic functions in the unit disk by invariant weighted area-mean-value property.
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