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As basswood is smooth and easy to cut,it is commonly used in pencil manufactories to make lead holders. For 7 billion pencils 3 million basses will be cut down a year.

由于极木具有木材细致、容易切削的特点，目前生产制作铅笔的厂家都以极木做笔杆材料。70亿支铅笔就意味着每年有300万株天然优质根木遭砍伐。

The significant improvement might be caused by the Cu substrate which has higher thermal conductivity than conventional Sapphire substrate. However, Cu substrate is a ductile metal plate and easy to deform during the processing. The deformation of the Cu substrate will destroy the LEDs that were bonded on the Cu substrate. Finally, LEDs will be fabricated on the patterned Cu/Si substrate to make high-power LEDs and solve the deformation problem in processing.

主要是因为利用铜基材去取代蓝宝石基板使其具有较高的散热性，可以使元件在较高的饱和电流下驱动以达到高功率的目标，然而，铜金属是延展性佳的材料，因此，在整个元件的制做过程中，易造成发光二极体元件毁坏，利用本实验的方法可以提升制造高功率发光二极体之良率。

Only John Ermen was able to set a 23 lap qualification on his home track to take the pole position for the NK class while in the Nomac class Ronald van den Bergh was able to get the better of Jordy Blok to take the pole position.

只有约翰ermen能订出一个23圈的资格对他家的轨道，采取极的立场，为NK细胞阶级，而在nomac级夏佳理范登贝bergh是能够得到更好的jordy blok采取极的立场。

The true shape of the hull can be considered by distributing dipoles on the hull surface.The pressure fluctuations on hull surface can be calculated through Bernoulli's equation.

真实的船体表面形状可以通过在船体表面布置偶极子来考虑，求得船体表面的偶极子强度后，通过Bernoulli方程可得到船体表面的脉动压力。

For example, karst topography is very approach this mode. We not only discuss the effect relation of dipole field in the mediator, but also in the property of antenna. Imaginaries Bessel function is involved in the process of discussion. because it is very important to the result.

钻孔雷达一般使用偶极天线，所以对偶极天线辐射场正反演问题的研究是目前的当务之急，它直接影响着对钻孔雷达资料的正确解释，对进一步研究钻孔雷达天线的有关特性及钻孔雷达的研制起着非常关键的作用。

The natural chromaticity is obtained by detecting the variation of the betatron tune with the main dipole field strength.

采用改变二极铁电流方法测量了自然色品和采用改变RF频率方法测量了校正色品，并对这 2种测量方法进行了理论分析和公式推导，还给出了自然色品、校正色品以及六极铁电流对校正色品影响的测量结

The properties of four factorized chi-square forms, which are used in minimization of correlated data, are studied, including their biasness and unbiasedness.

研究了关联实验数据的四种因子化形式的χ2 表达式及其极小化性质，同时讨论了极小化估计值的有偏性与无偏性。

The bilinear programming is converted into a max-min problem on the principle of duality, and a linear approximation algorithm for the max-min problem is presented, which proves to be convergent in finite steps.

利用对偶原理，将双线性规划问题转化为极大极小问题，研究了该极大极小问题的线性逼近算法，并证明了该算法在有限步内收敛。

The bilinear programming is converted into a max min problem on the principle of dual ity, and a linear approximation algorithm for the max min problem is presented, which proves to be convergent in finite steps.

利用对偶原理，将双线性规划问题转化为极大极小问题，研究了该极大极小问题的线性逼近算法，并证明了该算法在有限步内收敛。

By means of linear trend estimate, Morlet wavelet analysis and binomial coefficient smooth, the interdecadal variation characteristics of north polar vortex and spring precipitation in China are studied.

各季节极涡面积及强度均存在显著的年代际变化，在20世纪70年代中期之前有上升趋势，而后出现下降的趋势；但极涡面积总体上有显著的线性变小趋势。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。