查询词典 exact square

In 2000, F. LUCA proved that Fermat number are anti-sociable numbers, and in 2005, M. H. LE proved all powers of 2 are anti-sociable numbers. We have used the method of M. H. LE to obtain some new results of the anti-sociable numbers. For every integer n containing prime divisors that are 1 mod 4, let p mod 4 be an arbitrary prime divisor of n. There is at least one anti-sociable number in n^2, p^2n^2, p^4n^2, and p^6n^2. Therefore we can prove that anti-sociable numbers have positive density in perfect square numbers. We also give a method to find the exact anti-sociable numbers.

LUCA证明了Fermat数都是孤立数；2005年，乐茂华教授证明了2的方幂都是孤立数，用乐茂华教授的方法给出孤立数的一些新的结果：对于任意含有4w+1型素因子的正整数n，设p为n的任意一个4w+1型素因子，则在n^2，p^2n^2，p^4n^2，p^6n^2里至少有一个是孤立数，因此可以证明孤立数在完全平方数里有正密度，另外也给出求解确定孤立数的方法。

It also states that students "should know how to use quadratic functions to solve extremum problems in everyday life". It seems to me that befe all these, students should be properly taught the technique of completing the square (which underlies the solution of extremum problems of any kind) and the quadratic formula (which would then give *exact* solutions of quadratic equations).

我认为，在学习这些之前，应该适当地教给学生配平方的技巧（它是解决任何最值问题的基础），以及二次求根公式（它能给出二次方程的精确解）。

Reed might at that time some six or seven-and-thirty; she was a woman of robust frame, square-shouldered and strong limbed, not tall, and, though stout, not obese; she had a somewhat large face, the underjaw being much developed and very solid; her brow was low, her chin large and prominent, mouth and nose sufficiently regular; under her light eyebrows glimmered an eye devoid of ruth; her skin was dark and opaque, her hair nearly flaxen; her constitution was sound as a bell---illness never came near her; she was an exact, clever manager, her household and tenantry were thoroughly under her control; her children only, at times, defined her authority, and laughed it to scorn; she dressed well, and had a presence and port calculated to set off handsome attire.

Charlotte Bronte， Jane Eyre 那时侯，里德太太约莫有三十六七岁光景；她是个身体强壮的女人，阔肩膀，四肢结实，个儿不高，胖乎乎的，但还不能算胖得不得了；脸相当大，下颚很发达，很壮实；额头很低，下巴又大又突出，嘴巴跟眼睛还算端正；淡淡的眉毛下面，一双无情的眼睛在闪亮；她的皮肤黑黑的没有光泽，头发差不多和亚麻一个颜色；她的身体结实得跟一口钟一般——疾病从不敢接近她。她是个精明而严厉的总管，她的一家大小和所有的佃户全都归她管；只有她的孩子们偶尔会反抗和嘲笑她的权威。她讲究衣饰，她还有一种指望把她的漂亮衣服衬托得更美的风度和仪态。

Merely think here is a little square of blue, here an oblong of pink, here a streak of yellow, and paint it just as it looks to you, the exact color and shape, until it gives you own na ve impression of the scene before you.

只想着，这里是一小块正方形的蓝色，这里是一条长方形的粉红，这里是一长溜土黄，并照着它看起来的样子，画出确切的色彩和形状，直到画布上呈现出你对面前景物的本然印象为止。

Reed might at that time some six or seven-and-thirty; she was a woman of robust frame, square-shouldered and strong limbed, not tall, and, though stout, not obese; she had a somewhat large face, the underjaw being much developed and very solid; her brow was low, her chin large and prominent, mouth and nose sufficiently regular; under her light eyebrows glimmered an eye devoid of ruth; her skin was dark and opaque, her hair nearly flaxen; her constitution was sound as a bell---illness never came near her; she was an exact, clever manager, her household and tenantry were thoroughly under her control; her children only, at times, defined her authority, and laughed it to scorn; she dressed well, and had a presence and port calculated to set off handsome attire.

她是个精明而严厉的总管，她的一家大小和所有的佃户全都归她管；只有她的孩子们偶尔会反抗和嘲笑她的权威。她讲究衣饰，她还有一种指望把她的漂亮衣服衬托得更美的风度和仪态。

The monotony and extremum theory of function are applied to prove the geometrical characteristic of error hand for 2D linear segment uncertainty ε(subscript σ) model in theory. The result shows that the error hand has the geometrical shape of "larger ends and smaller middle" or "one end larger and the other smaller". The minimum width and its exact position of the error hand are calculated too. It is proved that the minimum width position of the error hand is near the end with the smaller mean square error.

运用函数单调性和极值理论，从理论上证明ε模型的误差带的几何特征；得到线元误差带不仅具有&两端大、中同小&，而且也可能具有&一端大、一端小&的几何形状；给出了误差带的最小带宽及其位置；论证了误差带的最小误差带宽的位置靠近中误差较小的一端。

First, we introduce the principle of feeder protective apparatus and select adequate protective equipments in accordance with different types of distribution system, using the least square error method to simulate the time/current curve and applicate simulation formula to digital the curve data, Secondary, using augmented incidence matrix method to find the exact pairs of primary/backup protection relay and find the relay tripping sequence of distribution lines.

首先介绍线路之过电流保护设备动作原理，依不同之配电系统型态来选用适当之保护设备种类，并使用最小平方误差法模拟保护电驿之时间－电流特性曲线，应用模拟方程式将曲线之资料数位化，且藉由图形理论中之增广关联矩阵法求取正确之主保护与后卫保护电驿对，以找出系统中各配电线路保护电驿间之跳脱顺序关系。

The Fisher exact test and the chi-square test were used for comparison of categorical variables.

与C57BL/6小鼠相比，两者的差异无统计学意义，与0d组的差异有统计学意义。

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。