三倍

In this paper,the area ratio of plane figure affine transformation in space is investigated,and the transformation equation of λ multiple of area is got , the area change of plane figure under affine transformation in space is studied, a important property of three axis ellipsoid is given and proved.

探讨了空间场的仿射变换下平面图形的面积比，推导出λ倍积变换方程式，进而探讨了空间场的仿射变换下平面图形面积的变化规律，给出并证明了三轴椭球体的一个重要性质。

As a journalist who speaks Chinese and has covered China for over 30 years, Aikman estimates there are currently over 80 million practicing Christian believers in China, and predicts that within three decades this number will quintuple to embrace fully one-third of China's population.

艾可曼的新书"耶稣在北京"。作为一个会讲汉语的记者，他报导中国事物30多年，埃克曼估计在中国有8千万基督徒，并预计在今后的30年中会增长5倍，占中国人口的整整三分之一。

British Airways registered 260 incidents in 1997, four times the figure of three years earlier.

英国航空事故260注册于1997年， 4倍的数字是三年前。

The population of many Alaskan cities has doubled in the past three years.

许多阿拉斯加城市的人口比过去三年多了不止两倍了。

Combining the performance evaluation (activity, selectivity and stability) and the characterization of the catalysts (XRD, TPD, FTIR and the pore structure measure), it can be concluded that :(1)The activity of modified β is higher than MCM-22, but the selectivity of ethylbenzene is lower about 3% than that of MCM-22;(2)The mounts of diethylbenzene and the other by-products are higher 1.7 times and 1.5 times than these of MCM-22 respectively;(3)The catalytic performance of zeolite mixture is nearly equal to modified β, but the selectivity of ethylbenzene is higher about 0.5% than that of modified β;(4)The catalytic activity of zeolite is mainly correlated with the number of acid sites, strength and distribution, and the distribution of products is determined by the binding energy of ethylbenzene and the pore structure, while the stability of catalyst is affected by the amount of poly-ring aromatic alkylate and the pore structure.

以性能评价和特性表征（XRD、TPD、FTIR和孔结构测定）相结合的方式，对上述三种催化剂性能比较的结果表明：（1）改性的活性明显高于MCM-22，但乙苯选择性却低于MCM-22绝对差约3%；（2）改性(上二乙苯和其他副产物的生成量分别约为MCM-22上对应值的1.7和1.5倍左右；（3）混合型催化剂的性能与改性相仿，但乙苯选择性提高0.5%左右；（4）对乙苯合成，沸石催化剂的活性主要取决于其B酸中心数、酸强度及酸分布，产物分布则取决于催化剂表面的乙苯脱附能垒值和孔道结构，而稠环芳烃的生成量和催化剂孔道结构是影响催化剂稳定性的主要因素。

In an interview with the Financial Times, Akira Amari, trade and industry minister, played down suggestions that Mr Abe's revitalisation plan would be expensive or lead to more government interference.

日本经济产业大臣甘利明在接受英国《金融时报》采访时，有意淡化外界的一些说法，即安倍晋三的复兴计划将成本高昂，或导致政府干预经济。

The difference in genetics reflected by the above three angle between selfed progenies and original amphidiploid was very small.

自交一代与原生双二倍体在三个层次上表现的遗传差异很小。

Soluble sugar,amylum and amino acid contents of four trisomics were lowe than that of diploid.

7.4个三体的可溶性糖、淀粉及氨基酸含量均极显著低于二倍体。

The system is composed of an off-axis Three-Mirror Anastigmatic telescope and two Offner convex grating spectrometers.

该系统由离轴非球面三反射镜望远成像系统和两个Offner凸光栅光谱成像系统组成，通过改变两个光谱成像系统的变倍比来实现两种探测器的匹配。

First, the population of Sylva is more widely dispersed, which would require us to spend more money to deliver our papers in that area, resulting in less 125The following is a recommendation from the president of Appleby College.

第二，一项对S电视收视习惯的长期调查显示，S人更愿意看当地新闻而不是全国新闻，因为他们花在当地新闻节目上的时间是全国节目的两倍。第三，我们的报道中有关 U的比有关S的更多，U可能对 125。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。